Pine stem, light micrograph
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Pine stem, light micrograph
Pine stem. Polarised light micrograph of a section through a growth ring in the stem of a Scots pine (Pinus sylvestris) tree, showing thick-walled tracheid cells (yellow-red) of older autumn wood. There are thin files of parenchyma and tracheid cells (dark) of the subsidiary medullary rays, which pass food substances radially. Many of the tracheid cell walls have bordered pits (circles, yellow) that pass water and minerals side-ways. Magnification: x32 when printed 10 centimetres wide
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 6338179
© DR KEITH WHEELER/SCIENCE PHOTO LIBRARY
Autumn Bordered Pit Cell Biology Cytological Cytology Growing Growth Ring Gymnosperm Gymnosperms Histological Histology Medullary Rays Microscopy Older Parenchyma Pinus Sylvestris Pits Polarised Light Scots Stain Stained Stem Structural Structures Subsidiary Ray Thick Walled Tissue Tracheid Tracheids Trunk Vessel Vessels Wood Xylem Tissue Cells Light Micrograph Light Microscope Section Sectioned
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