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Alcaligenes

Pronunciation: al-kā-lij′en-ēz

Definition: A genus of gram-negative, rod-shaped, nonfermenting bacteria (family Achromobacteraceae) that are either motile and peritrichous or nonmotile. They are strictly aerobic; some strains are capable of anaerobic respiration in the presence of nitrate or nitrite; their metabolism is respiratory, never fermentative; they do not use carbohydrates. Found mostly in the intestinal canal, decaying materials, dairy products, water, and soil; they can be isolated from human respiratory and gastrointestinal tracts and wounds in hospitalized patients with compromised immune systems; occasionally the cause of opportunistic infections, including nosocomial septicemia. Type species is Alcaligenes faecalis.

[alkali + G. -gen, producing]

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© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.
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