A 1707 engraving of sperm cells seen under a microscope by Antonie van Leeuwenhoek,who was the first to observe them | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Biophoto Associates |
Taille de l’image : | 6000 px × 2100 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : |
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