Primrose (Primula sp.) pollen grain,coloured scanning electron micrograph (SEM). Magnification: x2000 when printed at 10 centimetres wide | |
Licence : | Libre de droits |
Crédit: | Science Photo Library / Gschmeissner, Steve |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |