London, United Kingdom
Beech Tree Stem, Light Micrograph
Dr Keith Wheeler
Photograph - Photograph
Beech tree stem. Polarised light micrograph of a section through the woody stem of a common beech tree (Fagus sylvatica), showing diffuse-porous xylem vessels (dark blue) scattered throughout the tissue. The multicoloured cells are fibres, and fibre tracheids, which carry water. The horizontal files are the medullary rays, which carry water, minerals and food to the outer and inner tissues. Magnification x32, when printed 10 centimetres wide.
May 12th, 2013
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