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Definition of Polymyxins
1. polymyxin [n] - See also: polymyxin
Medical Definition of Polymyxins
1. Group of peptide antibiotics produced by Bacillus spp. Molecular weights are around 1000-1200 and the molecules are cyclic. Act against many gram-negative bacteria, working apparently by increasing membrane permeability. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)
Lexicographical Neighbors of Polymyxins
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