CHRIS BJORNBERG / SCIENCE PHOTO LIBRARY CHRIS BJORNBERG / SCIENCE PHOTO LIBRARY
Bacillus anthracis is a spore-forming bacterium that causes the anthrax disease in the skin (cutaneous), lungs (inhalation), and digestive system (gastrointestinal). Symptoms of inhalation anthrax begin like those of a cold or flu and progress to include chest discomfort, cough, shortness of breath, tiredness, and muscle aches. Antibiotics are used to treat anthrax and a vaccine is available. Magnification: 20,000x.
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