CDC / SCIENCE PHOTO LIBRARY CDC / SCIENCE PHOTO LIBRARY
Human plague bacteria culture. Petri dish containing a sheep's blood agar (SBA) medium, which has been inoculated with Gram-negative Yersinia pestis bacteria. Y. pestis is the pathogen responsible for causing human plague. This was the appearance of the growth after 48 hours of incubation at 37 degrees Celsius.
Model release not required. Property release not required.