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50.1 MB (19.2 MB compressed)
3405 x 5140 pixels
29.0 x 43.4 cm ⏐ 11.4 x 17.1 in (300dpi)
MAREK MIS / SCIENCE PHOTO LIBRARY MAREK MIS / SCIENCE PHOTO LIBRARY
Vascular bundle. Darkfield illuminated polarised light micrograph of a cross section through a vascular bundle in the stem of a Cosmos plant (Cosmos sp.). Vascular bundles are composed of xylem tissue which transports water, and phloem tissue which transports the products of photosynthesis. Magnification: x200 when printed 10 centimetres wide.
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