Cutaneous anthrax with a characteristic dark-brown to black-colored eschar that covered the lesion

View of a man's left forearm, showing a large cutaneous lesion, which had been diagnosed as a case of cutaneous anthrax caused by the bacterium, Bacillus anthracis. Note the characteristic dark-brown to black-colored eschar that covered the lesion. The bacterium derives its name from such eschars because the color resembles that of anthracite coal. (Photograph by Georgian Field Epidemiology Training Program resident, Archil Navdarashvili, while at Rustavi Hospital, in the country of Georgia, on August 25, 2012. Courtesy of Centers for Disease Control and Prevention Public Health Image Library, image 1982. Image cropped by Dr. Douglas J Lanska.)