ERIC GRAVE / SCIENCE PHOTO LIBRARY ERIC GRAVE / SCIENCE PHOTO LIBRARY
Bacillus anthracis. Light micrograph of anthrax bacteria, Bacillus anthracis, infecting tissue. These rod-shaped, Gram-positive bacteria are highly pathogenic. Commonly an infection of livestock, B. anthracis is transmitted to humans by contact with contaminated animal hair, hides or excrement. Two forms of the disease occur: pneumonia in the lungs (woolsorters disease); & severe ulceration of the skin (malignant pustules). Antibiotic treatment, if prompt, may be effective for skin infection. Pulmonary anthrax is fatal in most cases. Magnification: x133 at 35mm size.
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