Culture of bacteria. View of bacterial colonies (black dots) growing in agar in a petri dish. The bacteria are Salmonella and Escherichia coli. The surface of the agar has been streaked with a spiral plater,causing the colonies to grow along circular paths. These paths or streaks dilute the bacterial culture,until each colony forms around a single bacterium. Streaking is a technique for isolating strains of bacteria from mixed cultures,which are then incubated and grown in pure form | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Tompkinson, Geoff |
Taille de l’image : | 5125 px × 3437 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |