Penicillin resistance in Staphylococcus. Petri dish cultures of two strains of Staphylococcus aureus bacteria,comparing the action of a penicillin antibiotic. Bacterial growth appears opaque and grey on the surface of the growth medium. A white pellet of penicillin drug is seen in the centre of each dish. At left,one bacterial strain shows sensitivity to the penicillin drug by forming a clear zone of inhibited growth around the pellet. At right,a second strain of bacteria shows resistance to the penicillin and its growth is not inhibited by the drug pellet. Staphylo- coccus aureus is a bacteria which causes boils,abscesses,and urinary tract infections in humans | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Durham, John |
Bildgröße: | 4161 px × 2480 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |