Pneumonia of mixed etiology, conceptual illustration. Human lungs and close-up view of bacteria and viruses, two of the causative agents of pneumonia. | |
Lizenzart: | Lizenzfrei |
Credit: | Science Photo Library / Kon, Kateryna |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |