Lime tree stem,light micrograph

Numéro d’image : 11619028
Lime tree stem,light micrograph
Lime tree stem. Light micrograph of a section through the stem of a lime tree (Tilia europaea). The outer epidermis has been shed and replaced by a layer of cork (dark red). Under the cork is the outer cortex layer of flexible collenchyma tissue (dark blue and red) and a lower cortex of parenchyma (blue). Next is a ring of phloem (blue) with large sieve tubes,companion cells and fibres (pink). The phloem is broken by primary medullary rays (blue,triangular) and thin subsidiary medullary rays (dark blue). Next is a ring of xylem (pink) with large files of vessels and small woody parenchyma (light blue). The primary xylem (dark blue) and the central pith of parenchyma tissue (light blue) are also shown. Magnification: x5 when printed 10 centimetres
Licence : Droits gérés
Crédit: Science Photo Library / Wheeler, Dr. Keith
Taille de l’image : 5125 px × 3417 px
Model Release : Non requis
Restrictions : -

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