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 | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / McCarthy, David |
Bildgröße: | 4863 px × 3650 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |