Campylobacter bacteria are the number-one cause of food-related gastrointestinal illness in the United States. ARS scientists are currently sequencing multiple Campylobacter genomes. This scanning electron microscope image shows the characteristic spiral, or corkscrew, shape of C. jejuni cells and related structures. Photo by De Wood; digital colorization by Chris Pooley.
Yersinia pests | Gram-negative rod-shaped bacterium. It is a facultative anaerobe that can infect humans and other animals. Human Y. pestis infection takes three main forms: pneumonic, septicemic, and the notorious bubonic plagues.