这个词是什么意思？
A mixture of polymyxins B1 and B2, obtained from BACILLUS POLYMYXA strains. They are basic polypeptides of about eight amino acids and have cationic detergent action on cell membranes. Polymyxin B is used for treatment of infections with gram-negative bacteria, but may be neurotoxic and nephrotoxic.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D011112 · MeSH 2026。
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