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Biology LibreTexts


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    Microbiology is the study of microorganisms, those being unicellular (single cell), multicellular (cell colony), or acellular (lacking cells). Microbiology encompasses numerous sub-disciplines including virology, parasitology, mycology and bacteriology.

    Thumbnail: Campylobacter bacteria are the number-one cause of bacterial food-related gastrointestinal illness in the United States. Image used with permission (Public Domain; De Wood, Pooley from Agricultural Research Service).