Definitions of rickettsia
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any of a group of very small rod-shaped bacteria that live in biting arthropods (as ticks and mites) and cause disease in vertebrate hosts; they cause typhus and other febrile diseases in human beings
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type of:
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eubacteria, eubacterium, true bacteria
a large group of bacteria having rigid cell walls; motile types have flagella
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eubacteria, eubacterium, true bacteria
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