13.抗生素可由微生物产生具有�菌作用能在琼脂培养基中扩散.在筛选产生抗生素的菌种时先在琼脂培养基平板上划线接种一种从土壤中获得的甲菌 Template




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tomski13.抗生素可由微生物产生具有�菌作用能在琼脂培养基中扩散.在筛选产生抗生素的菌种时先在琼脂培养基平板上划线接种一种从土壤中获得的甲菌 coloring