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  • 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
  • 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
  • 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
  • Scanning electron micrograph (SEM) of the leaf top of a sacred lotus leaf (Nelumbo nucifera).   The structures on the top of the leaf contain micro-structures that repel water droplets better than any other material in nature.  The lotus leaf, an example of a super-hydrophobic plant.  The ability of the leaf to repel water is enhanced by the surface roughness.  The calibration bar is 10 um and the image was collected at a magnification of 7,940 x.
    K08SEMlotusleaf053b.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
  • 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
  • Sweet Flag Stem (Acorus calamus)  Light micrograph of a section through a fig tree stem. The large holes are cross-sections of xylem, vascular tissue used to transport water and minerals from the roots.  The rootstock of this aromatic plant are used as a natural insecticide and an ingredient of perfumes. The roots  were used for various medicinal purposes, and reportedly induce hallucinations if eaten in sufficiently large quantities. In modern times the active chemical in the plant have been identified as Beta-asarone,  a carcinogen.  The Food & Drug Administration (FDA) has banned the use of the sweet flag as a food additive. The magnification is 200 times when printed 10 inches wide.
    K07sweet-flag200x-11.tif
  • Sweet Flag Stem (Acorus calamus)  Light micrograph of a section through a fig tree stem. The large holes are cross-sections of xylem, vascular tissue used to transport water and minerals from the roots.  The rootstock of this aromatic plant are used as a natural insecticide and an ingredient of perfumes. The roots  were used for various medicinal purposes, and reportedly induce hallucinations if eaten in sufficiently large quantities. In modern times the active chemical in the plant have been identified as Beta-asarone,  a carcinogen.  The Food & Drug Administration (FDA) has banned the use of the sweet flag as a food additive. The magnification is 200 times when printed 10 inches wide.
    K07sweet-flag200x-1.tif
  • Sweet Flag Stem (Acorus calamus)  Light micrograph of a section through a fig tree stem. The large holes are cross-sections of xylem, vascular tissue used to transport water and minerals from the roots.  The rootstock of this aromatic plant are used as a natural insecticide and an ingredient of perfumes. The roots  were used for various medicinal purposes, and reportedly induce hallucinations if eaten in sufficiently large quantities. In modern times the active chemical in the plant have been identified as Beta-asarone,  a carcinogen.  The Food & Drug Administration (FDA) has banned the use of the sweet flag as a food additive. The magnification is 25 times when printed 10 inches wide.
    K07sweet-flag.tif
  • Sweet Flag Stem (Acorus calamus)  Light micrograph of a section through a fig tree stem. The large holes are cross-sections of xylem, vascular tissue used to transport water and minerals from the roots.  The rootstock of this aromatic plant are used as a natural insecticide and an ingredient of perfumes. The roots  were used for various medicinal purposes, and reportedly induce hallucinations if eaten in sufficiently large quantities. In modern times the active chemical in the plant have been identified as Beta-asarone,  a carcinogen.  The Food & Drug Administration (FDA) has banned the use of the sweet flag as a food additive. The magnification is 200 times when printed 10 inches wide.
    K07sweet-flag200x-10.tif
  • Sweet Flag Stem (Acorus calamus)  Light micrograph of a section through a fig tree stem. The large holes are cross-sections of xylem, vascular tissue used to transport water and minerals from the roots.  The rootstock of this aromatic plant are used as a natural insecticide and an ingredient of perfumes. The roots  were used for various medicinal purposes, and reportedly induce hallucinations if eaten in sufficiently large quantities. In modern times the active chemical in the plant have been identified as Beta-asarone,  a carcinogen.  The Food & Drug Administration (FDA) has banned the use of the sweet flag as a food additive. The magnification is 200 times when printed 10 inches wide.
    K07sweet-flag200x-4.tif
  • A false color X-ray of a fern.
    K15Xfern01C.jpg
  • A false color X-ray of a fern.
    K15Xfern01D.jpg
  • A false color X-ray of a fern.
    K15Xfern01B.jpg
  • A false color X-ray of a fern.
    K15Xfern01A.jpg
  • A digital streak image of a bouquet of flowers. This type of image is used to test the stability of digital time-lapse camera systems as well as collect image data around a circular object.  In this case the camera is tilted with respect to the rotation and a colorful twist of colors is the wonderful result.
    K09s2A-074.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
  • The sunset moth or the urania moth species (Urania ripheus) is an iridescent moth that is active during the day . This migratory insect lives in tropical rainforests in Madagascar. The 8 cm wide wings are iridescent and reflect red, yellow, and green.
    urania-r_00036.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
  • Daffodil flower as seen in UV light. The specimen was illuminated with shortwave ultraviolet light (UV) that cannot be detected with the camera used for this image. The tissues in the plant absorbed the UV light and fluoresced in the visible spectrum. This technique is called ultraviolet light induced visible light fluorescence (UVIVLF) and is often used in biology to detect unique compounds in samples. This image is part of a series.
    K20-C_3541UVVF.jpg
  • X-ray of daffodil flowers (Narcissus).
    K15Xdaff-batch1.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-Wing037B.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
  • These bulbous clouds form at the interface between calm could free air and the violent updrafts of a thunder storm.
    K08clouds4656.jpg
  • An X-ray of a common mouse cought in a mouse trap.
    x07mouse-in-trap-oneFC.jpg
  • Daffodil flower as seen in UV light. The specimen was illuminated with shortwave ultraviolet light (UV) that cannot be detected with the camera used for this image. The tissues in the plant absorbed the UV light and fluoresced in the visible spectrum. This technique is called ultraviolet light induced visible light fluorescence (UVIVLF) and is often used in biology to detect unique compounds in samples. This image is part of a series.
    K20-D_3539UVVF.jpg
  • Daffodil flower as seen in white light. The specimen was illuminated with white light to compare it with the shortwave ultraviolet light (UV) image in this series. This image is part of a series
    K20-C_3543white.jpg
  • Daffodil flower as seen in white light. The specimen was illuminated with white light to compare it with the shortwave ultraviolet light (UV) image in this series. This image is part of a series
    K20-D_3537white.jpg
  • Daffodil flower as seen in UV light. The specimen was illuminated with shortwave ultraviolet light (UV) that cannot be detected with the camera used for this image. The tissues in the plant absorbed the UV light and fluoresced in the visible spectrum. This technique is called ultraviolet light induced visible light fluorescence (UVIVLF) and is often used in biology to detect unique compounds in samples. This image is part of a series.
    K20-A_3552UVVF.jpg
  • X-ray of daffodil flowers (Narcissus).
    K15X-daffodilbulb2B.jpg
  • Butchers Broom (box holly) Ruscus aculeatus. Butcher's broom is an aromatic, diuretic, mildly laxative herb that reduces inflammation and constricts the veins.  The plant is considered a medicinal herb since medieval times.  Magnifation is 32 times when printed 10 inches wide.
    K07butchers-broom.tif
  • X-ray of an eastern cottontail rabbit (Sylvilagus floridanus) sustaining numerous broken bones after being bit by a cat.  This is a youg rabbit.
    K12X-rabbit001B.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
  • An X-ray of a common mouse cought in a mouse trap.
    x07mouse-in-trap-oneFC.jpg
  • X-ray of daffodil flowers (Narcissus).
    K15X-daffodilbulb1B.jpg
  • Butchers Broom (box holly) Ruscus aculeatus. Butcher's broom is an aromatic, diuretic, mildly laxative herb that reduces inflammation and constricts the veins.  The plant is considered a medicinal herb since medieval times.  Magnifation is 200 times when printed 10 inches wide.
    K07butchers-broom200x1.tif
  • X-ray of two daffodils
    K11-xdaffcolor.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
  • An x-ray of a blue crab (Callinectes sapidus)
    bluecrab-blue.jpg
  • Daffodil flower as seen in UV light. The specimen was illuminated with shortwave ultraviolet light (UV) that cannot be detected with the camera used for this image. The tissues in the plant absorbed the UV light and fluoresced in the visible spectrum. This technique is called ultraviolet light induced visible light fluorescence (UVIVLF) and is often used in biology to detect unique compounds in samples. This image is part of a series.
    K20-B_3551UVVF.jpg
  • Daffodil flower as seen in white light. The specimen was illuminated with white light to compare it with the shortwave ultraviolet light (UV) image in this series. This image is part of a series
    K20-A_3554white.jpg
  • Butchers Broom (box holly) Ruscus aculeatus. Butcher's broom is an aromatic, diuretic, mildly laxative herb that reduces inflammation and constricts the veins.  The plant is considered a medicinal herb since medieval times.  The magnification is 200 times when printed 10 inches wide.
    K07butchers-broom200x2.tif
  • .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
  • Daffodil flower as seen in white light. The specimen was illuminated with white light to compare it with the shortwave ultraviolet light (UV) image in this series. This image is part of a series
    K20-B_3550UVVF.jpg
  • X-Ray of Bleeding heart flowers (Dicentra formosa)
    K13X-bleedingheart01B.jpg
  • X-ray of an eastern cottontail rabbit (Sylvilagus floridanus) sustaining numerous broken bones after being bit by a cat.  This is a youg rabbit.
    K12X-rabbit001A.jpg
  • A Sunflower seen in ultraviolet (UV) radiation. The image shows the different patterns on the flower petals that have evolved to attract insects to the flower. These patterns are often called honey guides. This image is part of a series showing the same flower in ultraviolet (UV) radiation and visible light.
    K19Flower-B4497UV.jpg
  • A Sunflower seen in simulated insect vision. In this image the UV reflectivity from the flower has been added to a normal human vision image to create one interpretation of what an insect might see. The image shows the different patterns on the flower petals as perceived by insects that can see well into the ultraviolet region of the spectrum. These special patterns that have evolved to attract insects to the flower are called honey guides. This image is part of a series showing the same flower in ultraviolet (UV) radiation, visible light, insect vision, and simulated bee vision.
    K19Flower-C4503Bug.jpg
  • An X-Ray of a tulip flower.
    K19X-parrot-tulip06C.jpg
  • Thin film interference on soap film. Bands of color are created by white light shining on a film of soap. Some of the light reflects off the surface of the film, while the rest of the light travels through the film and reflects off the back of the film. The colors are caused by light waves interfering with each other in a process called optical interference. The different colors are caused by different thickness of the soap film.
    K19Soap-Film3409.jpg
  • An X-Ray of a Cannabis Plant (Cannabis sativa). The plant produces tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.
    K18Xcannabis013B.jpg
  • An X-Ray of a Cannabis Plant (Cannabis sativa). The plant produces tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.
    K18Xcannabis006B.jpg
  • An X-Ray of a Cannabis Plant (Cannabis sativa). The plant produces tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.
    K18Xcannabis006A.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
  • 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
  • Crystals in the roots of the Cannabis plant. The exact composition of these are currently unknown and their role in the life cycle of the plant is a mystery. Why are they there? What do they do? What is the chemical composition of the crystals? Just a few of the questions that seem to be a daily occurrence when looking at the cannabis plant with this level of magnification.<br />
Magnification on the printed page is 4300x at 9 inches wide.
    170614Root-crystalscombo.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 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
  • False color X-ray of a Gerber daisy (Gerbera sp).
    K15X-freakdaisy-0F.jpg
  • False color X-ray of a Gerber daisy (Gerbera sp).
    K15X-freakdaisy-05C..jpg
  • False color X-ray of a Gerber daisy (Gerbera sp).
    K15X-freakdaisy-03D3.jpg
  • Tulips, colored X-ray.
    K15Xtulips-on-white202B.jpg
  • Tulips, colored X-ray.
    K15Xgiant-tulips02C.jpg
  • False color x-ray of Calla Lily (Zantedeschia aethiopica).
    K15XCallaLily6A.jpg
  • False color x-ray of Calla Lily (Zantedeschia aethiopica).
    K15XCallaLily05A.jpg
  • Raccoon (Procyon lotor) crawling through a hollow tree. Photographed in New York State.
    K15X-raccoonskull01D.jpg
  • Flase color x-ray of a palm leaf collected in Texas. Leaf of a California fan palm (Washingtonia filifera), showing the many green fronds. This palm is native to the desert oases of California and Arizona, in the USA. It will easily reach over 15 meters in height when well-watered, growing over 30 centimeters per year.
    K15X-palmleaf24A.jpg
  • An x-ray of Hardneck garlic scapes.  These leafless stems of the garlic plant (Allium sativum) are edible and used as a vegetable.
    K15X-garlic-comp02C.jpg
  • X-ray Cockscombs Fower Cockscombs (Celosia sp.)
    K15X-CockscombsFower01A.jpg
  • X-ray of Anthurium Flower. Anthurium bouquet (Anthurium andraeanum)
    K15X-Anthuriumbouquet03E.jpg
  • X-ray of Anthurium Flower. Anthurium bouquet (Anthurium andraeanum)
    K15X-Anthuriumbouquet03A.jpg
  • Bacteria on the surface of a hop leaf.  This bacteria is unidentified. This image was collected at 12,230 and represents a field of view of 10um in the horizontal direction. The vine (Humuluslupulus) grows throughout Europe and the Americas.  Hops is extensively cultivated for the production of beer. Preparations of its flowers are used in herbal medicine to aid digestion and to relieve fever.
    K15Sem-hopsleaf022B.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
  • Trichomes on a Rosemary leaf, chemically stained to show detail. Magnification was 40X on the 35mm sensor.
    K14-rosemarry30.jpg
  • Colored-enhanced scanning electron micrograph (SEM) of a section through a xylem vessel in a cannabis stem. The xylem transports water and mineral nutrients from the roots throughout the plant. The walls of the xylem vessels are strengthened with lignin  loops, a woody substance that helps to support the plant. Magnification: x2200 when printed at 10 centimeters wide.
    K13SEM-canna67.jpg
  • The Skull of an American crow (Corvus brachyrhynchos) is a large passerine bird species of the family Corvidae. It is a common bird found throughout much of North America. In the interior of the continent south of the Arctic, it is referred to as simply the "crow".  American crows are common, widespread and adaptable, but they are highly susceptible to the West Nile virus. They are monitored as a bioindicator. Direct transmission of the virus from American crows to humans is not recorded to date, and not considered likely.
    crow-skull_0116.jpg
  • False Color X-ray of a snapping turtle (Chelydra serpentina). This particular turtle is a female and is full of eggs.  This specimen was collected after it was killed by a car – look closely at the x-ray and you can see extensive shell damage as well as a number of unlaid eggs. This freshwater turtle is found in wetlands throughout North America, from southern Canada to the Gulf of Mexico. An adult can have a shell length of around 45 centimeters.  They feed on whatever they can catch in their powerful beaks, including fish, birds, mammals, amphibians and carrion.
    K14X-Snapper-Turtle01C.jpg
  • X-ray of bleeding heart flowers (Dicentra formosa). False color x-ray.
    K14X-bleedingheartcolorW.jpg
  • An X-ray of the jaws of a mako shark (Isurus oxyrinchus).
    K12X-makosharkjawCU-C.jpg
  • Fluorescent Coral in Long Wave UV light. A close up image of Favia sp. Coral. This species of coral glows brightly when illuminated in long wave ultra-violet (UV) light.  Favia is a genus of reef building stony corals in the family Faviidae.  This image is part of a series showing the identical specimen in white light and UV light.
    K12UVcorals042.JPG
  • Eastern Wood Frog (Rana sylvatica)
    K12-woodfrog7089.jpg
  • An xray of a blooming lilac.
    K10Xlilac1B.jpg
  • An x-ray of a cocoa pod.   The cocoa pod (Theobroma cacao)..This image shows the placement of the seeds inside the pod.  This particular pod does not have as  many seeds as it should to be part of a high yield harvest.  The seeds are used for the production of chocolate.
    K12x-cocoapodA.jpg
  • SEM of a Jumping Spider.  The field of view of this image is 4mm.
    K08SEMjumpspider001a.jpg
  • Starfish. X-ray of a starfish (phylum: Echino- dermata)
    starfish2-23Ablue.jpg
  • An X-Ray of three fancy daffodils.
    daff-3fancy8x10.jpg
  • SEM of Eastern bluebird (Sialia sialis) feathers.  This image is 3 mm wide..These feathers have micro-structures that reflect blue light.  These microscopic features allow the bird to display bright blue iridescent colors.
    K08SEMbbfeath06-5.jpg
  • A Sunflower seen in one form of simulated “bee vision” or insect vision. Since many insects have vision that ranges from the yellow to the ultraviolet part of the spectrum, this image has been adjusted to have the areas of highest reflectivity in the green part of the spectrum. This sunflower image shows the different patterns on the flower petals as perceived by insects that can see well into the ultraviolet region of the spectrum. These special patterns that have evolved to attract insects to the flower are called honey guides. This image is part of a series showing the same flower in ultraviolet (UV) radiation, visible light, insect vision, and simulated bee vision.
    K19Flower-A4114Bee.jpg
  • A Sunflower seen in visible light. This image is part of a series showing the same flower in ultraviolet (UV) radiation.
    K19Flower-C4503.jpg
  • An X-Ray of a tulip flower.
    K19X-parrot-tulip06A.jpg
  • An X-Ray of a Cannabis Plant (Cannabis sativa). The plant produces tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.
    K18Xcannabisleafs01-05B.jpg
  • An X-Ray of a Cannabis Plant (Cannabis sativa). The plant produces tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.
    K18XcannabisberryB.jpg
  • An X-Ray of a Cannabis Plant (Cannabis sativa). The plant produces tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.
    K18Xcannabis002D.jpg
  • An X-Ray of a Cannabis Plant (Cannabis sativa). The plant produces tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.
    K18Xcannabis002.jpg
  • Close up of a leaf on the bud of a cannabis plant. The trichomes on the bud of a cannabis (Cannabis sativa) plant.  Glandular cells called trichomes have glands at the sop that store THC. Tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.
    K18op-cannabisbud1008A.jpg
  • Fluorescent light is used to image the bud of a cannabis plant. The trichomes on the bud of a cannabis (Cannabis sativa) plant are full of Tetrahydrocannabinol (THC)and glow green. The chlorophyll filled cells of the leaf glow red. The width of the green trichome heads is 90 um, or about the width of a human hair. This is an example of a plant that is past harvest time as the THC laden trichome heads have started to shrivel.
    K18glow-cannabisbud17-10ZSA.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
  • Crystals in the roots of the Cannabis plant. The exact composition of these are currently unknown and their role in the life cycle of the plant is a mystery. Why are they there? What do they do? What is the chemical composition of the crystals? Just a few of the questions that seem to be a daily occurrence when looking at the cannabis plant with this level of magnification.<br />
Magnification on the printed page is 4300x at 9 inches wide.
    K170614Root-crystalscombo.jpg
  • Scanning Electron Micrograph (SEM) of a cross section of marijuana (Cannabis sativa) seed, showing the root and seed leaves enclosed. The field of view of this image is 4 mm in the horizontal direction.
    K170613cola-seedM057pan.jpg
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