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[pol-ee-mik-sin] /ˌpɒl iˈmɪk sɪn/

noun, Pharmacology.
any of various polypeptide antibiotics derived from Bacillus polymyxa.
any of several polypeptide antibiotics active against Gram-negative bacteria, obtained from the soil bacterium Bacillus polymyxa

polymyxin pol·y·myx·in (pŏl’ē-mĭk’sĭn)
Any of various mainly toxic antibiotics derived from strains of the soil bacterium Bacillus polymyxa and used to treat various infections with gram-negative bacteria.


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