any of several toxic antibiotics obtained from a particular soil bacterium 特定の土壌のバクテリアから得られるいくつかの毒性のある抗生物質の1つ。
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【上位】 a chemical substance derivable from a mold or bacterium that can kill microorganisms and cure bacterial infections; "when antibiotics were first discovered they were called wonder drugs" 微生物を殺し細菌感染を治すことができる、カビや細菌から抽出できる化学物質。
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