Dog rose stem. Polarised light micrograph of a cross-section through the stem of a dog rose (Rosa canina) plant. The outer cortex (red) is made of cork cambium tissue,beneath which is a ring of phloem and sieve tube bundles (pale blue). Under this is a ring of cambium (red) and then woody fibres (palegreen). The solid pith (bottom,yellow and blue) is composed of large parenchyma cells. Magnification: x44 when printed 10 centimetres wide | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Wheeler, Dr. Keith |
Bildgröße: | 6467 px × 4335 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |