Laboratory warning signs. Biohazard warning sign (right) and a sign forbidding cleaning staff to enter (left) on the door to a biological laboratory. Photographed in the UK | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Gustoimages |
Bildgröße: | 4991 px × 3382 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |