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单词 gramicidin
释义
gram·i·ci·din (grămĭ-sīdn)
n.
An antibiotic substance consisting of a mixture of several closely related polypeptides, produced by the soil bacterium Bacillus brevis and used topically to treat infections caused by certain gram-positive bacteria.

[GRAM(-POSITIVE) + -CID(E) + -IN.]
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