NATIONAL INSTITUTES OF HEALTH / SCIENCE PHOTO LIBRARY NATIONAL INSTITUTES OF HEALTH / SCIENCE PHOTO LIBRARY
Anthrax bacteria and immune cell. Coloured scanning electron micrograph (SEM) of a Bacillus anthracis bacterium interacting with an immune cell (blue). This are rod-shaped Gram-positive bacteria can infect the skin (cutaneous anthrax), causing raised itchy lesions, the lungs (pulmonary anthrax), which is fatal unless treated quickly, and the digestive system (gastrointestinal anthrax), causing vomiting of blood and severe diarrhoea. All forms can be fatal if left untreated. Treatment is with antibiotics. Magnification unknown.
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