Pain analysis. Scientist applying increasing pressure to a laboratory rat's foot to test the animal's pain threshold. As soon as the rat indicates it is in pain,the weight placed on the foot is measured and recorded | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Psaila, Philippe |
Taille de l’image : | 5157 px × 3419 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |