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Pine stem, light micrograph

Pine stem, light micrograph

C011/6302

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Credit

DR KEITH WHEELER / SCIENCE PHOTO LIBRARY DR KEITH WHEELER / SCIENCE PHOTO LIBRARY

Caption

Pine stem. Light micrograph of a section through a single annual growth ring in the stem of a pine (Pinus sp.) tree, showing large thin-walled tracheid cells (light pink) of younger spring wood and smaller thick-walled tracheid cells (dark pink) of older autumn wood. The large circular lacuna (resin duct, centre) is lined with parenchyma cells (blue and brown). The tracheid walls of many cells have bordered pits (green) which pass water and minerals side-ways between cells. Magnification: x70 when printed 10 centimetres wide.

Release details

Model release not required. Property release not available.

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