Dilated blood vessel and cross section at top, constricted blood vessel and cross section at bottom. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Shockey, Gwen |
Taille de l’image : | 5048 px × 3560 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |