bacitracin

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bacitracin

bacitracin (băsˌĭtrāˈsĭn), antibiotic produced by a strain of the bacterial species Bacillus subtilis. It is widely used for topical therapy such as for skin and eye infections; it is effective against gram-positive bacteria, including strains of staphylococcus that are resistant to penicillin (see Gram's stain). Bacitracin is toxic to humans and is no longer used internally.
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bacitracin

[‚bas·ə′trās·ən]
(microbiology)
A group of polypeptide antibiotics produced by Bacillus licheniformis.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.