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多粘菌素是不同菌株或与其相似的菌株Bacillus polymyxa所产生的抗菌素。这类抗菌素在生物和化学性质方面很相似。它对多种革蘭氏陰性細菌有强烈的
Polymyxins are antibiotics produced by different strains or similar strains of Bacillus polymyxa. Such antibiotics are similar in biological and chemical properties. It is intense against many Gram-negative bacteria