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Related to Spirochaetales: Spirochaetaceae
the spirochetes, an order of bacteria in which some species are free-living and some parasitic; it includes the disease-causing genera Borrelia, Leptospira, and Treponema.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
An order of bacteria containing slender, flexuous cells, 6-500 mcm in length, in the form of spirals with at least one complete turn. Some species may have an axial filament, a lateral crista, or ridge, or transverse striations. All these organisms are motile, whirling or spinning about the long axis, thus driving the organism forward or backward. Free-living, saprophytic, and parasitic forms occur. The type family is Spirochaetaceae.
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