Animation of a human sperm cell approaching an egg, preparing to fertilise it. Only one sperm cell may penetrate the egg's outer layer to complete fertilisation, after which the egg becomes impermeable to other sperm. | |
Licence : | Libre de droits |
Crédit : | Science Photo Library / SciePro |
Model Release : | Non requis |
Property release : | Non requis |
Durée : | 16 Secondes |
Aspect ratio : | 16/9 |
Restrictions : | - |