Scots pine (Pinus sylvestris) stem

Scots pine (Pinus sylvestris) stem

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Credit: DR KEITH WHEELER/SCIENCE PHOTO LIBRARY

Caption: Scots pine (Pinus sylvestris) stem. Light micrograph of a section through the epidermis removed from a stem of a Scots pine tree. Groups of star-shaped crystals (black-white) of calcium oxalate, known as druses, can be seen scattered throughout the tissue, along with stomata (pores, round, white), their guard cells (sausage-shaped) and slightly plasmolysed cytoplasm with chloroplasts, nuclei and vacuoles. Magnification: x37 when printed 10 centimetres wide.

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Keywords: anatomical, anatomy, biological, biology, botanical, botany, branch, calcium oxalate, cell, cells, chloroplast, chloroplasts, conifer, coniferous, crystal, crystalline, crystallised, crystals, cytoplasm, druse, druses, epidermal, epidermis, flora, gas exchange, guard cell, gymnosperm, gymnosperms, histological, histology, light micrograph, light microscope, nature, no-one, nobody, nuclei, nucleus, pinus sylvestris, plant, plants, plasmolysed, pore, pores, scots pine, section, sectioned, stem, stoma, stomata, tissue, tree, vacuole, vacuoles, wildlife

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