Nasturtium stem. Coloured scanning electron micrograph (SEM) of a freeze-fractured Nasturtium (Tropaeolum sp.) stem,showing numerous vascular bundles (such as at upper centre) with an inner xylem (pink) and outer phloem (yellow). Magnification: x100 when printed at 10 centimetres wide | |
Lizenzart: | Lizenzfrei |
Credit: | Science Photo Library / Gschmeissner, Steve |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |