Marijuana ud, SEM
Cannabis plant. Colored scanning electron micrograph (SEM) of the bottom surface of a cannabis leaf (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 80x when printed 10 cm wide.
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