title: Isolation and characterization of plasmids from parent and variant strains of Streptomyces ribosidificus.
mesh_terms: D004269:DNA, Bacterial / Q000032:analysis; D007612:Kanamycin / Q000494:pharmacology; D008854:Microscopy, Electron; D008970:Molecular Weight; D010957:Plasmids; D012271:Ribostamycin / Q000494:pharmacology; D013302:Streptomyces / Q000187:drug effects / Q000235:genetics* / Q000378:metabolism
chemical_list: D004269:DNA, Bacterial; D012271:Ribostamycin; D007612:Kanamycin