<i >Listeria monocytogenes</i>, brainstem, postmortem specimen, photomicrograph

Listeria monocytogenes, brainstem, postmortem specimen, photomicrograph

Tissue smear of postmortem brainstem samples from an animal with listeriosis. Note the presence of large numbers of the gram-positive bacterium Listeria monocytogenes. Gram stain, high power.

Courtesy of Dr. John Prescott.