title: Further studies of R-factor satellite DNA.
mesh_terms: D002499:Centrifugation, Density Gradient; D002875:Chromosomes; D004269:DNA, Bacterial / Q000378:metabolism*; D004352:Drug Resistance, Microbial; D005111:Extrachromosomal Inheritance; D005827:Genetics, Microbial; D012486:Salmonella typhimurium / Q000378:metabolism*; D013307:Streptomycin / Q000494:pharmacology; D013752:Tetracycline / Q000494:pharmacology
chemical_list: D004269:DNA, Bacterial; D013752:Tetracycline; D013307:Streptomycin