actinomycin /ac·ti·no·my·cin/ (-mi´sin) a family of antibiotics from various species of Streptomyces, which are active against bacteria and fungi; it includes the antineoplastic agent dactinomycin (actinomycin D).
ac·ti·no·my·cin ( k t -n -m  s n)n. Any of a large group of red, often toxic, polypeptide antibiotics isolated from soil bacteria of several species of Streptomyces (originally Actinomyces) that are active against gram-positive bacteria and fungi. |
actinomycin
a family of antibiotics from various species of Streptomyces, which are active against bacteria and fungi; it includes the antineoplastic agents actinomycin C (cactinomycin) and actinomycin D (dactinomycin).
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