Petri dish culture of the bacterium Escherichia coli,a well used laboratory organism,growing on L medium. The picture shows the pattern of streaking used to isolate single colonies. Parallel lines are drawn across the culture using a platinum wire loop. These lines are crossed and recrossed at different angles,diluting the culture until colonies originally formed around a single bacterium are isolated. The small blobs in the foreground are single colonies. Streaking is an essential technique for isolating particular strains or mutant bacteria in mixed cultures | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Burgess, Dr. Jeremy |
Bildgröße: | 4215 px × 4241 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |