Surgical face mask,coloured scanning electron micrograph (SEM). This mask is made of the plant material cellulose,which is biodegradable. Most modern surgical masks are made from a non-woven material such as this and are discarded after each use | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / McCarthy, David |
Taille de l’image : | 4865 px × 3652 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |