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Images Dated 18th June 2003

Choose from 19 pictures in our Images Dated 18th June 2003 collection for your Wall Art or Photo Gift. All professionally made for Quick Shipping.

Technician with bacterial cultures in petri dishes Featured 18 Jun 2003 Image

Technician with bacterial cultures in petri dishes

MODEL RELEASED. Bacterial cultures. Masked techni- cian holding two petri dishes containing bacterial cultures in gloved hands. The petri dishes are filled with different coloured agar nutrient media on which bacteria grow. Lines of bacteria can be seen growing on the dishes where they were streaked. This involves running a platinum wire loop that has been placed in contact with a bacterial culture over the agar. By heating the loop, each successive set of streaked lines leaves fewer bacteria, until round colonies form around single bacteria. This technique is used to isolate particular strains of bacteria, which may then be incubated and grown in pure form