A confocal micrograph of an intestinal biopsy from a child infected with shiga toxin-producing E. coli. Shiga toxin is an extremely potent toxin that is produced when the bacterium contains a bacteri...

A confocal micrograph showing Bacillus subtilis, a Gram-positive, rod-shaped bacterium that is commonly found in soil. Distinct lineages of bacteria expressing different fluorescent proteins were init...

Colorized light micrograph of Aggregatibacter actinomycetemcomitans colonies. A. actinomycetemcomitans is a Gram-negative bacteria commonly found to cause infections of the oral cavity and often isola...

Colorized light micrograph of Aggregatibacter actinomycetemcomitans colonies. A. actinomycetemcomitans is a Gram-negative bacteria commonly found to cause infections of the oral cavity and often isola...

Colorized light micrograph of Aggregatibacter actinomycetemcomitans colonies. A. actinomycetemcomitans is a Gram-negative bacteria commonly found to cause infections of the oral cavity and often isola...

Scanning electron microscope image of Vibrio cholerae bacteria, which infect the digestive system. This image is part of an image group that includes CIL:40395-40399.

Scanning electron microscope image of Vibrio cholerae bacteria, which infect the digestive system. This image is part of an image group that includes CIL:40395-40399.

Scanning electron microscope image of Vibrio cholerae bacteria, which infect the digestive system. This image is part of an image group that includes CIL:40395-40399.

Scanning electron microscope image of Vibrio cholerae bacteria, which infect the digestive system. This image is part of an image group that includes CIL:40395-40399.

Colorized image of a colony of Actinobacillus actinomycetemcomitans, one of the thousands of different types of bacteria found in the mouth. It is one of the main causes of gum disease, which, as well...