Cannabis plant, SEM

Cannabis plant, SEM

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Credit: STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY

Caption: Cannabis plant. Coloured scanning electron micrograph (SEM) of the surface of a cannabis (Cannabis sativa) plant. The pointed hairs are called lithocyst cells. They contain cystoliths (calcium carbonate crystals). Glandular cells called trichomes are also present. These are capitate trichomes that have stalks. These trichomes secrete a resin containing tetrahydrocannabinol, the active component of cannabis when used as a drug.

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Keywords: biological, biology, botanical, botany, calcium carbonate, cannabis sativa, capitate trichome, capitate trichomes, cell, cells, coloured, cystolith, cystoliths, drug, drugs, epidermis, false-coloured, flora, glandular, green, hair, hairs, hashish, hemp, leaf, leaves, lithocyst, lithocysts, marijuana, narcotic, narcotics, nature, plant, plants, resin, scanning electron micrograph, scanning electron microscope, sem, stem, stems, tetrahydrocannabinol, thc, trichome, trichomes

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