Unformatted text preview: pathogenicity. Certain species inhabit water environments, while others are parasites of arthropods (such as ticks and lice) as well as warm-blooded animals. Spirochetes include Borrelia burgdorferi , the agent of Lyme disease, Treponema pallidum , the cause of syphilis, and Leptospira interrogans , the agent of leptospirosis. Spirilla have a spiral shape, a rigid cell wall, and motility mechanisms based on polar flagella. The genera Spirillum, Aquaspirillum , and Azospirillum are widely dispersed among and readily isolated from numerous environments. These organisms are aerobic bacteria wound like helices. Species S. minor is a cause of rat bite fever in humans. The genus Campylobacter contains several pathogenic species, including C. jejuni , which causes campylobacteriosis, an intestinal infection accompanied by diarrhea....
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- Fall '07
- Bacteria, Spirochetes, warmblooded animals. Spirochetes