Scanning electron micrograph (SEM) of a cross-section through a horsetail (Hippuris vulgaris) stem showing the vascular system. Magnification: x81 when printed at 10 centimetres wide. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / KARL GAFF |
Taille de l’image : | 3756 px × 2808 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |