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facultative anaerobe

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n.

An organism, such as a bacterium, that can live in the absence as well as in the presence of atmospheric oxygen.

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Mississippi’s nickname comes from the magnificent trees that grow there. What is it?
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

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