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  • Color-enhanced Scanning Electron Micrograph (SEM) of the surface of a marijuana (Cannabis sativa) plant, showing glandular cells, called trichomes. These are capitate trichomes that have stalks. They secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. Magnification: x500 when printed 10 cm wide.
    K170516protozoa-A002.jpg
  • Scanning electron microscope image of a Blue mussel (Mytilus edulis) shell.  Colored scanning electron micrograph (SEM). The shell of a mollusc is a tough exoskeleton formed from calcium carbonate (aragonite or calcite). It evolved as a protective barrier to predators. Magnification: 3,740x and the image is 30 um wide.
    K12sem-bluemusselA.jpg
  • Scanning electron microscope (SEM) of human bone tissue. Colored scanning electron micrograph  of cancellous (spongy) bone. Cancellous bone is found in the interior of bones. Cancellous bone is characterized by a honeycomb arrangement, comprising a network of trabeculae (rod-shaped tissue). These structures provide support and strength to the bone. The spaces within this tissue contain bone marrow (not seen), a blood forming substance. This image is x150 when printed 10 cm wide.
    K13bone-c200A.jpg
  • .Monarch Butterfly scales (Danaus plexippus)  Colored Scanning Electron Micrograph (SEM) of scales from the wing.  Magnification is 800 x and represents a field of view of .01 mm.
    K08SEMmonarch-WING043.jpg
  • .Monarch Butterfly scales (Danaus plexippus)  Colored Scanning Electron Micrograph (SEM) of scales from the wing.  Magnification is 210 x and represents a field of view of .4 mm.
    K08SEMmonarch-WING037.jpg
  • .Monarch Butterfly scales (Danaus plexippus)  Colored Scanning Electron Micrograph (SEM) of scales from the wing.  Magnification is 400 x and represents a field of view of .2 mm.
    K08SEMmonarch-WING040.jpg
  • .Monarch Butterfly scales (Danaus plexippus)  Colored Scanning Electron Micrograph (SEM) of scales from the wing.  Magnification is 110 x and represents a field of view of 1 mm.
    K08SEMmonarch-Wing035B.jpg
  • .Monarch Butterfly scales (Danaus plexippus)  Colored Scanning Electron Micrograph (SEM) of scales from the wing.  Magnification is 210 x and represents a field of view of .4 mm.
    K08SEMmonarch-Wing037B.jpg
  • .Monarch Butterfly scales (Danaus plexippus)  Colored Scanning Electron Micrograph (SEM) of scales from the wing.  Magnification is 110 x and represents a field of view of 1 mm.
    K08SEMmonarch-Wing035.jpg
  • Colored scanning electron micrograph (SEM) of the head of a bedbug (Cimex sp.). It has a compound eye (grey) on each side of its head. Antennae protrude on either side of its mouth. The stylet, a piercing mouthpiece (red, center,) is used to suck blood from warm-blood animals, including humans. Bedbugs are generally only active at night, hiding in crevices in walls and furniture and in bedding during the day. Although they do not transmit disease, their saliva can cause itchy swellings on the skin.
    K14SEM-bedbug3fullC.jpg
  • Colored scanning electron micrograph (SEM) of the head of a bedbug (Cimex sp.). It has a compound eye (grey) on each side of its head. Antennae protrude on either side of its mouth. The stylet, a piercing mouthpiece (red, center,) is used to suck blood from warm-blood animals, including humans. Bedbugs are generally only active at night, hiding in crevices in walls and furniture and in bedding during the day. Although they do not transmit disease, their saliva can cause itchy swellings on the skin.
    K14SEM-bedbug3fullW2.jpg
  • Colored scanning electron micrograph (SEM) of the head of a bedbug (Cimex sp.). It has a compound eye (grey) on each side of its head. Antennae protrude on either side of its mouth. The stylet, a piercing mouthpiece (red, center,) is used to suck blood from warm-blood animals, including humans. Bedbugs are generally only active at night, hiding in crevices in walls and furniture and in bedding during the day. Although they do not transmit disease, their saliva can cause itchy swellings on the skin.
    K14SEM-bedbug3fullW.jpg
  • Colored scanning electron micrograph (SEM) of the head of a bedbug (Cimex sp.). It has a compound eye (grey) on each side of its head. Antennae protrude on either side of its mouth. The stylet, a piercing mouthpiece (red, center,) is used to suck blood from warm-blood animals, including humans. Bedbugs are generally only active at night, hiding in crevices in walls and furniture and in bedding during the day. Although they do not transmit disease, their saliva can cause itchy swellings on the skin.
    K14SEM-bedbug3fullB.jpg
  • Scanning electron micrograph (SEM) of asbestos fibers. Asbestos is a fibrous mineral form of impure magnesium silicate. It is often used in building materials, chemical filters, and electrical insulation. Inhalation of asbestos fibers may cause asbestosis or lung cancer.  Calibration bar in the image is 2 um and was taken at 20,000x
    K08asbestos031.jpg
  • Scanning electron micrograph (SEM) of asbestos fibers. Asbestos is a fibrous mineral form of impure magnesium silicate. It is often used in building materials, chemical filters, and electrical insulation. Inhalation of asbestos fibers may cause asbestosis or lung cancer.  Calibration bar in the image is 10 um and was taken at 4,140x
    K08asbestos029.jpg
  • Scanning electron micrograph (SEM) of asbestos fibers. Asbestos is a fibrous mineral form of impure magnesium silicate. It is often used in building materials, chemical filters, and electrical insulation. Inhalation of asbestos fibers may cause asbestosis or lung cancer.  Calibration bar in the image is 100 um and was taken at 1,000x
    K08asbestos027.jpg
  • Colored scanning electron micrograph (SEM) of the head of a bedbug (Cimex sp.). It has a compound eye (grey) on each side of its head. Antennae protrude on either side of its mouth. The stylet, a piercing mouthpiece (red, center,) is used to suck blood from warm-blood animals, including humans. Bedbugs are generally only active at night, hiding in crevices in walls and furniture and in bedding during the day. Although they do not transmit disease, their saliva can cause itchy swellings on the skin.
    K14SEM-bedbug3full.jpg
  • Scanning electron microscope image of Snake Liverwort (Conocephalum conicum).  This specimen was collected in the moist glens of the Finger Lake Region of New York State.  Liverworts (class Hepaticae) are related to mosses. They grow in damp habitats and are found on the ground and moist rock surfaces. They have no true vascular tissue, but are attached to the ground by means of root-like rhizoids.  Liverworts can reproduce vegetatively by fragmentation of the thallus or by producing specialized cell masses called gemmae.   The central structures in this image are the reproduction organs. Magnification is 125x and represents a section of the plant 1 mm wide...
    K08SEmliverwort000B.jpg
  • Scanning electron microscope image of Snake Liverwort (Conocephalum conicum).  This specimen was collected in the moist glens of the Finger Lake Region of New York State.  Liverworts (class Hepaticae) are related to mosses. They grow in damp habitats and are found on the ground and moist rock surfaces. They have no true vascular tissue, but are attached to the ground by means of root-like rhizoids.  Liverworts can reproduce vegetatively by fragmentation of the thallus or by producing specialized cell masses called gemmae.   The central structures in this image are the reproduction organs. Magnification is 45x and represents a section of the plant 4 mm wide...
    K08SEmliverwort002B.jpg
  • Scanning electron microscope image of Snake Liverwort (Conocephalum conicum).  This specimen was collected in the moist glens of the Finger Lake Region of New York State.  Liverworts (class Hepaticae) are related to mosses. They grow in damp habitats and are found on the ground and moist rock surfaces. They have no true vascular tissue, but are attached to the ground by means of root-like rhizoids.  Liverworts can reproduce vegetatively by fragmentation of the thallus or by producing specialized cell masses called gemmae.   The central structures in this image are the reproduction organs. Magnification is 125x and represents a section of the plant 1 mm wide...
    K08SEmliverwort000C.jpg
  • A scanning electron microscope image of the leaf of the lavender plant (Lavandula augustifolia ).  The branching cells give added protection from insects.  The pillow shaped structure produces the aromatic sent that gives lavender it characteristic smell.
    K07semLAV4layors.jpg
  • Scanning electron microscope image of Snake Liverwort (Conocephalum conicum).  This specimen was collected in the moist glens of the Finger Lake Region of New York State.  Liverworts (class Hepaticae) are related to mosses. They grow in damp habitats and are found on the ground and moist rock surfaces. They have no true vascular tissue, but are attached to the ground by means of root-like rhizoids.  Liverworts can reproduce vegetatively by fragmentation of the thallus or by producing specialized cell masses called gemmae.   The central structures in this image are the reproduction organs. Magnification is 45x and represents a section of the plant 4 mm wide...
    K08SEmliverwort002B.jpg
  • Female mosquito head (family Culicidae).  The individual eye lenses detect levels of light and dark in different directions.  Several mosquito species are vectors for human diseases, including malaria and yellow fever.   This is a scanning electron microscope image.  The calibration bar is 100 um and the magnification is 689 x.
    K08semmosquito-c010A.jpg
  • Female mosquito head (family Culicidae).  The individual eye lenses detect levels of light and dark in different directions.  Several mosquito species are vectors for human diseases, including malaria and yellow fever.   This is a scanning electron microscope image.  The calibration bar is 200 um and the magnification is 243 x.
    K08semmosquito-C012.jpg
  • Male mosquito head (family Culicidae).  The large bushy antenna is used to detect females. The individual eye lenses detect levels of light and dark in different directions.  Several mosquito species are vectors for human diseases, including malaria and yellow fever. This is a scanning electron microscope image..The calibration bar is 100 um and the magnification is 41 x.
    K08semmosquito-c01.jpg
  • The anti-reflection structures on the surface of one eye element on the head of a female mosquito.  (family Culicidae).  These bump structures interact with the wave nature of light to increase the transmission of light into the eye by decreasing the reflected light.  Structures such as this are beginning to be incorporated into modern optical devices    This is a scanning electron microscope image.  The calibration bar is 1 um and the magnification is 9220 x.
    K08semmosquito-b10red.jpg
  • Female mosquito head (family Culicidae).  The individual eye lenses detect levels of light and dark in different directions.  Several mosquito species are vectors for human diseases, including malaria and yellow fever.   This is a scanning electron microscope image.  The calibration bar is 100 um and the magnification is 689 x.
    K08semmosquito-c010.jpg
  • An SEM image of a male mosquito (family Culicidae).  Several mosquito species are vectors for human diseases, including malaria and yellow fever.   This is a scanning electron microscope image.  The calibration bar is 100 um and the magnification is 41 x..
    K08semmosquito-c05.jpg
  • Female mosquito eye (family Culicidae).  The individual eye lenses detect levels of light and dark in different directions.  Several mosquito species are vectors for human diseases, including malaria and yellow fever.   This is a scanning electron microscope image.  The calibration bar is 10 um and the magnification is 826x.
    K08semmosquito-b07red.jpg
  • The scales found on the back of a mosquito (family Culicidae).  These scales decrease fluid flow across the surface of the mosquito and allow it to fly with less energy.  Several mosquito species are vectors for human diseases, including malaria and yellow fever.   This is a scanning electron microscope image.  The calibration bar is 10 um and the magnification is 360 x..
    K08semmosquito-b11.jpg
  • Female mosquito eye (family Culicidae).  The individual eye lenses detect levels of light and dark in different directions.  Several mosquito species are vectors for human diseases, including malaria and yellow fever.   This is a scanning electron microscope image.  The calibration bar is 10 um and the magnification is 407 x.
    K08semmosquito-b06.jpg
  • Female mosquito head (family Culicidae).  The individual eye lenses detect levels of light and dark in different directions.  Several mosquito species are vectors for human diseases, including malaria and yellow fever.   This is a scanning electron microscope image.  The calibration bar is 100 um and the magnification is 156 x.
    K08semmosquito-b03.jpg
  • Cannabis plant. Colored scanning electron micrograph (SEM) of the surface of a cannabis (Cannabis sativa) plant.  Magnification is 180x when printed 10 cm wide.
    K14SEM-canna-19.jpg
  • Cannabis plant. Colored scanning electron micrograph (SEM) of the surface of a cannabis (Cannabis sativa) plant.  Glandular cells called trichomes are also present. These are capitate trichomes that have stalks. These trichomes secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.  Magnification is 100x when printed 10 cm wide.
    K14SEM-canna-44.jpg
  • Cannabis plant. Colored scanning electron micrograph (SEM) of the bottom surface of a cannabis (Cannabis sativa) plant.  Magnification is 90x when printed 10 cm wide.
    K14SEM-canna-29B.jpg
  • The toe hairs on a gecko's foot pads. Scanning electron micrograph (SEM) of hairs, or setae, from a gecko's (family Gekkonidae) toe. These hairs enable the gecko to cling to smooth surfaces by taking advantage of weak intermolecular forces, known as Van der Waals forces.
    K08SEMgeckofoot9B.jpg
  • Cannabis plant. Colored scanning electron micrograph (SEM) of the surface of a cannabis (Cannabis sativa) plant bud.  Glandular cells called trichomes are also present. These are capitate trichomes that have stalks. These trichomes secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.  Magnification is 180x when printed 10 cm wide.
    K13SEM-pot-A01color-CSB.jpg
  • Cannabis plant. Colored scanning electron micrograph (SEM) of the bottom surface of a cannabis (Cannabis sativa) plant.  Magnification is 90x when printed 10 cm wide.
    K14SEM-canna-29.jpg
  • Cannabis plant. Colored scanning electron micrograph (SEM) of the surface of a cannabis (Cannabis sativa) plant.  Glandular cells called trichomes are also present. These are capitate trichomes that have stalks. These trichomes secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.  Magnification is 180x when printed 10 cm wide.
    K13SEM-pot-multiBSE-001.jpg
  • Caffeine crystals. Colored scanning electron micrograph (SEM) of caffeine crystals (1,3,7-trimethylxanthine).   Caffeine stimulates the central nervous system (CNS), increasing alertness and deferring fatigue. It occurs in coffee beans and tea leaves. Magnification: 150x and the image is .8mm wide.
    K12SEM-caffeine17B.jpg
  • Cannabis plant. Colored scanning electron micrograph (SEM) of the surface of a cannabis (Cannabis sativa) plant bud.  Glandular cells called trichomes are also present. These are capitate trichomes that have stalks. These trichomes secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.  Magnification is 180x when printed 10 cm wide.
    K13SEM-pot-A04C.jpg
  • Cannabis plant. Colored scanning electron micrograph (SEM) of the surface of a cannabis (Cannabis sativa) plant bud.  Glandular cells called trichomes are also present. These are capitate trichomes that have stalks. These trichomes secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.  Magnification is 180x when printed 10 cm wide.
    K13SEM-pot-A04A.jpg
  • Cannabis plant. Colored scanning electron micrograph (SEM) of the surface of a cannabis (Cannabis sativa) plant bud.  Glandular cells called trichomes are also present. These are capitate trichomes that have stalks. These trichomes secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.  Magnification is 180x when printed 10 cm wide.
    K13SEM-pot-A01color-CSA.jpg
  • Cannabis plant. Colored scanning electron micrograph (SEM) of the surface of a cannabis (Cannabis sativa) plant.  Glandular cells called trichomes are also present. These are capitate trichomes that have stalks. These trichomes secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.  Magnification is 90x when printed 10 cm wide.
    K14SEM-canna-46.jpg
  • Cannabis plant. Colored scanning electron micrograph (SEM) of the bottom surface of a cannabis (Cannabis sativa) plant.  Magnification is 70x when printed 10 cm wide.
    K14SEM-canna-25.jpg
  • Cannabis plant. Colored scanning electron micrograph (SEM) of the surface of a cannabis (Cannabis sativa) plant.  Magnification is 180x when printed 10 cm wide.
    K13SEM-pot-multiBSE-001canna-14.jpg
  • Cannabis plant. Colored scanning electron micrograph (SEM) of the surface of a cannabis (Cannabis sativa) plant.  Glandular cells called trichomes are also present. These are capitate trichomes that have stalks. These trichomes secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.  Magnification is 100x when printed 10 cm wide.
    K13SEM-canna-42.jpg
  • Cannabis plant. Colored scanning electron micrograph (SEM) of the surface of a cannabis (Cannabis sativa) plant bud.  Glandular cells called trichomes are also present. These are capitate trichomes that have stalks. These trichomes secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.  Magnification is 180x when printed 10 cm wide.
    K13SEM-pot-A01color-CSC.jpg
  • Scanning electron micrograph of human brain cells. Brain cells or nerons are an extensive network of interconnecting dendrites. Cortical Neurons make up the brain's cortex (grey matter). The cerebral cortex is a sheet of neural tissue that is outermost to the cerebrum of the mammalian brain. It covers the cerebrum and cerebellum, and is divided into left and right hemispheres. The cerebral cortex plays a key role in memory, attention, perceptual awareness, thought, language, and consciousness. Magnification x1400 at 12 cm wide.
    K15sem-human-brain0050.jpg
  • Cannabis plant. Colored scanning electron micrograph (SEM) of a trichome on the top of a leaf of a cannabis (Cannabis sativa) plant.  Magnification is x700 when printed 10 cm wide.
    K14SEM-cannabis53.jpg
  • Cannabis plant. Colored scanning electron micrograph (SEM) of the surface of a cannabis (Cannabis sativa) plant.  Glandular cells called trichomes are also present. These are capitate trichomes that have stalks. These trichomes secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.  Magnification is 90x when printed 10 cm wide.
    K14SEM-canna-46B.jpg
  • Cannabis plant. Colored scanning electron micrograph (SEM) of the top surface of a cannabis (Cannabis sativa) plant.  Magnification is 180x when printed 10 cm wide.
    K14SEM-canna-13.jpg
  • Cannabis plant. Colored scanning electron micrograph (SEM) of the surface of a cannabis (Cannabis sativa) plant.  Glandular cells called trichomes are also present. These are capitate trichomes that have stalks. These trichomes secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.  Magnification is 120x when printed 10 cm wide.
    K13SEM-canna-45.jpg
  • Cannabis plant. Colored scanning electron micrograph (SEM) of the surface of a cannabis (Cannabis sativa) plant.  Glandular cells called trichomes are also present. These are capitate trichomes that have stalks. These trichomes secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.  Magnification is 180x when printed 10 cm wide.
    K13SEM-canna-37.jpg
  • Fragment of an Abalone shell; color enhanced scanning electron micrograph (SEM) of a section through an abalone (Haliotis sp.) shell. The shell is composed of layers of overlapping platelets of calcium carbonate crystals, or aragonite,  Between the layers are thin sheets of protein (not seen). This structure makes the shell much stronger than the materials would be in any other arrangement.  Abalones are edible mollusks found in warm seas. The thin layers of shell reflect light using the wave nature of light.  Each thin layer reflects a particular wavelength – together the layers reflect wavelengths of light that constructively interfere to create bright greens and blues. Magnification: x1000 when printed at 10 cm wide.
    K14SEMabalone0039.jpg
  • Caffeine crystals. Colored scanning electron micrograph (SEM) of caffeine crystals (1,3,7-trimethylxanthine).   Caffeine stimulates the central nervous system (CNS), increasing alertness and deferring fatigue. It occurs in coffee beans and tea leaves. Magnification: 150x and the image is .8mm wide.
    K12SEM-caffeine17a.jpg
  • Caffeine crystals. Colored scanning electron micrograph (SEM) of caffeine crystals (1,3,7-trimethylxanthine).   Caffeine stimulates the central nervous system (CNS), increasing alertness and deferring fatigue. It occurs in coffee beans and tea leaves. Magnification: 952x and the image is .12mm wide.
    K12SEM-caffeine08B.jpg
  • Crack in human tooth enamel. Colored scanning electron micrograph (SEM).   The enamel is the outer covering of the crown (visible part) of the tooth. It is the hardest substance in the human body.
    KW07-toothcolor1.jpg
  • The toe hairs on a gecko's foot pads. Scanning electron micrograph (SEM) of hairs, or setae, from a gecko's (family Gekkonidae) toe. These hairs enable the gecko to cling to smooth surfaces by taking advantage of weak intermolecular forces, known as Van der Waals forces.
    K08semgeckofoot6col.jpg
  • Cannabis plant. Colored scanning electron micrograph (SEM) of the surface of a cannabis (Cannabis sativa) plant bud.  Glandular cells called trichomes are also present. These are capitate trichomes that have stalks. These trichomes secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.  Magnification is 180x when printed 10 cm wide.
    K13SEM-pot-A04B.jpg
  • Cannabis plant. Colored scanning electron micrograph (SEM) of the bottom surface of a cannabis (Cannabis sativa) plant.  Magnification is 70x when printed 10 cm wide.
    K14SEM-canna-25B.jpg
  • Cannabis plant. Colored scanning electron micrograph (SEM) of the surface of a cannabis (Cannabis sativa) plant.  Glandular cells called trichomes are also present. These are capitate trichomes that have stalks. These trichomes secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.  Magnification is 52x when printed 10 cm wide.
    K13SEM-canna-43.jpg
  • Fragment of an Abalone shell; color enhanced scanning electron micrograph (SEM) of a section through an abalone (Haliotis sp.) shell. The shell is composed of layers of overlapping platelets of calcium carbonate crystals, or aragonite,  Between the layers are thin sheets of protein (not seen). This structure makes the shell much stronger than the materials would be in any other arrangement.  Abalones are edible mollusks found in warm seas. The thin layers of shell reflect light using the wave nature of light.  Each thin layer reflects a particular wavelength – together the layers reflect wavelengths of x4000 when printed at 10 cm wide.
    K14SEM140611abalone_0061.jpg
  • Fragment of an Abalone shell; color enhanced scanning electron micrograph (SEM) of a section through an abalone (Haliotis sp.) shell. The shell is composed of layers of overlapping platelets of calcium carbonate crystals, or aragonite,  Between the layers are thin sheets of protein (not seen). This structure makes the shell much stronger than the materials would be in any other arrangement.  Abalones are edible mollusks found in warm seas. The thin layers of shell reflect light using the wave nature of light.  Each thin layer reflects a particular wavelength – together the layers reflect wavelengths of light that constructively interfere to create bright greens and blues. Magnification: x8000 when printed at 10 cm wide.
    K14SEM140611abalone_0054B.jpg
  • Scanning electron micrograph (SEM) of poppy seeds. Poppy seeds used in breads and sweets are the seeds of Papaver somniferum, "opium poppy,"  The seeds and the oil pressed from them have been used in Asia Minor for thousands of years.
    K13SEM-poppy-seedB.jpg
  • Caffeine crystals. Colored scanning electron micrograph (SEM) of caffeine crystals (1,3,7-trimethylxanthine).   Caffeine stimulates the central nervous system (CNS), increasing alertness and deferring fatigue. It occurs in coffee beans and tea leaves. Magnification: 952x and the image is .12mm wide.
    K12SEM-caffeine08a.jpg
  • Scanning electron micrograph of human brain cells. Brain cells or nerons are an extensive network of interconnecting dendrites. Cortical Neurons make up the brain's cortex (grey matter). The cerebral cortex is a sheet of neural tissue that is outermost to the cerebrum of the mammalian brain. It covers the cerebrum and cerebellum, and is divided into left and right hemispheres. The cerebral cortex plays a key role in memory, attention, perceptual awareness, thought, language, and consciousness. Magnification x400 at 12 cm wide.
    K15sem-human-brain0053.jpg
  • Cannabis plant. Colored scanning electron micrograph (SEM) of the surface of a cannabis (Cannabis sativa) plant.  Magnification is 180x when printed 10 cm wide.
    K14SEM-canna-19B.jpg
  • Fragment of an Abalone shell; color enhanced scanning electron micrograph (SEM) of a section through an abalone (Haliotis sp.) shell. The shell is composed of layers of overlapping platelets of calcium carbonate crystals, or aragonite,  Between the layers are thin sheets of protein (not seen). This structure makes the shell much stronger than the materials would be in any other arrangement.  Abalones are edible mollusks found in warm seas. The thin layers of shell reflect light using the wave nature of light.  Each thin layer reflects a particular wavelength – together the layers reflect wavelengths of light that constructively interfere to create bright greens and blues. Magnification: x8000 when printed at 10 cm wide.
    K14SEM140611abalone_0054.jpg
  • Scanning electron micrograph (SEM) of poppy seeds. Poppy seeds used in breads and sweets are the seeds of Papaver somniferum, "opium poppy,"  The seeds and the oil pressed from them have been used in Asia Minor for thousands of years.
    K13SEM-poppy-seedC.jpg
  • Scanning electron micrograph (SEM) of poppy seeds. Poppy seeds used in breads and sweets are the seeds of Papaver somniferum, "opium poppy,"  The seeds and the oil pressed from them have been used in Asia Minor for thousands of years.
    K13SEM-poppy-seedA.jpg
  • Carpet beetle larva. Colored scanning electron micrograph (SEM) of a carpet beetle (Anthrenus sp.)  These larvae are a significant pest, feeding on animal materials including fur, feathers, hair, leather and other fabrics and stored food products. The larvae can survive for two to three years indoors, before hatching into free-living adult beetles. They are covered in hairs (setae) that can cause irritation to humans on contact with skin or if inhaled. Magnification: x110 when printed 10 centimeters wide.
    K13-SEM-carpetbeetle001.jpg
  • The toe hairs on a gecko's foot pads. Scanning electron micrograph (SEM) of hairs, or setae, from a gecko's (family Gekkonidae) toe. These hairs enable the gecko to cling to smooth surfaces by taking advantage of weak intermolecular forces, known as Van der Waals forces.
    K08semgeckofootb1A.jpg
  • Scanning electron micrograph of human brain cells. Brain cells or nerons are an extensive network of interconnecting dendrites. Cortical Neurons make up the brain's cortex (grey matter). The cerebral cortex is a sheet of neural tissue that is outermost to the cerebrum of the mammalian brain. It covers the cerebrum and cerebellum, and is divided into left and right hemispheres. The cerebral cortex plays a key role in memory, attention, perceptual awareness, thought, language, and consciousness. Magnification x1400 at 12 cm wide.
    K15sem-human-brain0046.jpg
  • Color-enhanced Scanning Electron Micrograph (SEM) of the surface of a marijuana (Cannabis sativa) plant, showing glandular cells, called trichomes. These trichomes are on teh surface of the leaf. They secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. The circular cell structure a tthe center of the frame is 40 um in diameter.
    K170524CPD-triCN101mix.jpg
  • Color-enhanced Scanning Electron Micrograph (SEM) of the surface of a marijuana (Cannabis sativa) plant, showing glandular cells, called trichomes. These are capitate trichomes that have stalks. They secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. Magnification: 52X when printed 10 cm wide.
    170613gland-triF031pan3.jpg
  • Color-enhanced Scanning Electron Micrograph (SEM) of the surface of a marijuana (Cannabis sativa) plant, showing glandular cells, called trichomes. These are capitate trichomes that have stalks. They secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. The head o fthe trichome is 60 um in diameter.
    K170607stemE038A-pan.jpg
  • Color-enhanced Scanning Electron Micrograph (SEM) of the surface of a marijuana (Cannabis sativa) plant leaf, showing glandular cells, called trichomes. These are capitate trichomes that have stalks. They secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. The spherical cells at the top of the trichomes are 60 um in diameter.
    170614leafH046pan2.jpg
  • Color-enhanced Scanning Electron Micrograph (SEM) of the surface of a marijuana (Cannabis sativa) plant leaf, showing glandular cells, called trichomes. These are capitate trichomes that have stalks. They secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. The spherical cells at the top of the trichomes are 60 um in diameter.
    170614leafF035pan2.jpg
  • Color-enhanced Scanning Electron Micrograph (SEM) of the surface of a marijuana (Cannabis sativa) plant leaf, showing glandular cells, called trichomes. These are capitate trichomes that have stalks. They secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. The spherical cells at the top of the trichomes are 60 um in diameter.
    170613cola-bladeH043pan1.jpg
  • Color-enhanced Scanning Electron Micrograph (SEM) of the surface of a marijuana (Cannabis sativa) plant leaf, showing glandular cells, called trichomes. These are capitate trichomes that have stalks. They secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. The spherical cells at the top of the trichomes are 60 um in diameter.
    K170614leafC016pan03.jpg
  • The stigma of Cannabis sativa. The stigma is the structure on the female flower that catches the male pollen. The sexual transfer of genetic materials is critical for creating seeds.  This Scanning Electron Microscope image (SEM) has false color applied. The stigma is 1 mm in diameter in this image.
    K170517-B027pan.jpg
  • Color-enhanced Scanning Electron Micrograph (SEM) of the surface of a marijuana (Cannabis sativa) plant leaf, showing glandular cells, called trichomes. These are capitate trichomes that have stalks. They secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. The spherical cells at the top of the trichomes are 60 um in diameter.
    170614leafH046pan.jpg
  • Color-enhanced Scanning Electron Micrograph (SEM) of the surface of a marijuana (Cannabis sativa) plant leaf, showing glandular cells, called trichomes. These are capitate trichomes that have stalks. They secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. The spherical cells at the top of the trichomes are 60 um in diameter.
    170613cola-bladeH043pan2.jpg
  • Color-enhanced Scanning Electron Micrograph (SEM) of the surface of a marijuana (Cannabis sativa) plant, showing glandular cells, called trichomes. These are capitate trichomes that have stalks. They secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. Magnification: 52X when printed 10 cm wide.
    170613cola-bladeC015pan1.jpg
  • Color-enhanced Scanning Electron Micrograph (SEM) of the surface of a marijuana (Cannabis sativa) plant leaf, showing glandular cells, called trichomes. These are capitate trichomes that have stalks. They secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. The spherical cells at the top of the trichomes are 60 um in diameter.
    170613cola-bladeA002pan2.jpg
  • Color-enhanced Scanning Electron Micrograph (SEM) of the surface of a marijuana (Cannabis sativa) plant leaf, showing glandular cells, called trichomes. These are capitate trichomes that have stalks. They secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. The spherical cells at the top of the trichomes are 60 um in diameter.
    170609BractK035pan.jpg
  • Color-enhanced Scanning Electron Micrograph (SEM) of the surface of a marijuana (Cannabis sativa) plant leaf, showing glandular cells, called trichomes. These are capitate trichomes that have stalks. They secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. The spherical cells at the top of the trichomes are 60 um in diameter.
    170609BractD011pantk.jpg
  • Color-enhanced Scanning Electron Micrograph (SEM) of the surface of a marijuana (Cannabis sativa) plant leaf, showing glandular cells, called trichomes. These are capitate trichomes that have stalks. They secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. The spherical cells at the top of the trichomes are 60 um in diameter.
    170609bractC013pan2.jpg
  • Color-enhanced Scanning Electron Micrograph (SEM) of the surface of a marijuana (Cannabis sativa) plant leaf, showing glandular cells, called trichomes. These are capitate trichomes that have stalks. They secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. The spherical cells at the top of the trichomes are 60 um in diameter.
    170609bractB008PANtk.jpg
  • Color-enhanced Scanning Electron Micrograph (SEM) of the surface of a marijuana (Cannabis sativa) plant leaf, showing glandular cells, called trichomes. These are capitate trichomes that have stalks. They secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. The spherical cells at the top of the trichomes are 60 um in diameter.
    170609BractA002pantk2.jpg
  • Color-enhanced Scanning Electron Micrograph (SEM) of a biting midge (Ceratopogonidae sp.), more commonly known as a No See-Um.   Magnification: x165 when printed 10 cm wide.
    K14SEM-bitting-midge019.jpg
  • The stigma of Cannabis sativa. The stigma is the structure on the female flower that catches the male pollen. The sexual transfer of genetic materials is critical for creating seeds.  This Scanning Electron Microscope image (SEM) has false color applied. The stigma is 1 mm in diameter in this image.
    K170525-B-cpdM080C.jpg
  • Color-enhanced Scanning Electron Micrograph (SEM) of the surface of a marijuana (Cannabis sativa) plant leaf, showing glandular cells, called trichomes. Thise is a low glandular trichomes that is close to the surface of the leaf. It secretes a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. The spherical cells at the top of the trichomes are 20 um in diameter.
    K170510stem058thric.jpg
  • Color-enhanced Scanning Electron Micrograph (SEM) of the surface of a marijuana (Cannabis sativa) plant, showing glandular cells, called trichomes. These are capitate trichomes that have stalks. They secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. Magnification: 52X when printed 10 cm wide.
    170614leafG043pan2.jpg
  • Color-enhanced Scanning Electron Micrograph (SEM) of the surface of a marijuana (Cannabis sativa) plant, showing glandular cells, called trichomes. These are capitate trichomes that have stalks. They secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. Magnification: 52X when printed 10 cm wide.
    170614leafG043pan.jpg
  • Rare double glandular trichome. Color-enhanced Scanning Electron Micrograph (SEM) of the surface of a marijuana (Cannabis sativa) plant leaf, showing glandular cells, called trichomes. These are capitate trichomes that have stalks. They secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. The spherical cells at the top of the trichomes are 60 um in diameter.
    170613FreakB010.jpg
  • Color-enhanced Scanning Electron Micrograph (SEM) of the surface of a marijuana (Cannabis sativa) plant, showing glandular cells, called trichomes. These are capitate trichomes that have stalks. They secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. Magnification: 52X when printed 10 cm wide.
    170613cola-bladeK048pan1.jpg
  • Color-enhanced Scanning Electron Micrograph (SEM) of the surface of a marijuana (Cannabis sativa) plant, showing glandular cells, called trichomes. These are capitate trichomes that have stalks. They secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. Magnification: 52X when printed 10 cm wide.
    170613cola-bladeC015pan2.jpg
  • Color-enhanced Scanning Electron Micrograph (SEM) of the surface of a marijuana (Cannabis sativa) plant leaf, showing glandular cells, called trichomes. These are capitate trichomes that have stalks. They secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. The spherical cells at the top of the trichomes are 60 um in diameter.
    170609BractN053PANtk2.jpg
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