antibiotics

雅思

n. 抗生学；抗生素

any of various red antibiotics isolated from soil bacteria

n the penicillin that constitutes the principal component of many commercial antibiotics

addition of side chains has produced semisynthetic antibiotics with greater antibacterial activity

any of various antibiotics obtained from Penicillium molds (or produced synthetically) and used in the treatment of various infections and diseases

any of several toxic antibiotics obtained from a particular soil bacterium

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