London, United Kingdom
Xylem Tissue, Sem
Photograph - Photograph
Xylem tissue. Coloured scanning electron micrograph (SEM) of a section through xylem tissue from a dicotyledon rootlet. Xylem vessels (purple) transport water and mineral nutrients from the roots throughout the plant. Its thick lignin walls also provide structural support. Surrounding the vessels are parenchyma cells. Magnification x400 when printed 10 centimetres wide.
May 13th, 2013
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