A family of aerobic Gram-positive bacteria (order Actinomycetales) that produce a vegetative mycelium which does not fragment into bacillary or coccoid forms; they produce conidia which are borne on sporophores. These organisms occur primarily in the soil; some are thermophiles found in rotting manure, a few are parasitic, and many produce antibiotics. The type genus is Streptomyces.
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Strep·to·my·ce·ta·ce·ae .strep-tō-.mī-sə-'tā-sē-.ē n pl a family of higher bacteria (order Actinomycetales) that form vegetative mycelia which rarely break up into bacillary forms, have conidia borne on sporophores, and are typically aerobic soil saprophytes but include a few parasites of plants and animals
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Strep·to·my·ce·ta·ceae (strep″to-mi″sə-taґse-e) a family of aerobic, gram-positive bacteria of the suborder Streptomycineae; organisms of medical importance are contained in the genus Streptomyces.Medical dictionary. 2011.