CROWN COPYRIGHT / HEALTH & SAFETY LABORATORY / SCIENCE PHOTO LIBRARY CROWN COPYRIGHT / HEALTH & SAFETY LABORATORY / SCIENCE PHOTO LIBRARY
Bacterial research. Colonies of bacteria growing in a petri dish. The petri dish contains a nutrient medium (such as agar) on which a sample of bacteria has been cultured. The amount and size of the bacterial colonies will depend on the agar used and the temperature at which the sample was cultured.
Model release not required. Property release not required.