title: Characterization of two circular satellite species of deoxyribonucleic acid in Rhodopseudomonas spheroides.
mesh_terms: D002499:Centrifugation, Density Gradient; D002586:Cesium; D002712:Chlorides; D004269:DNA, Bacterial / Q000032:analysis; D006863:Hydrogen-Ion Concentration; D008970:Molecular Weight; D009691:Nucleic Acid Denaturation; D009711:Nucleotides / Q000032:analysis; D012241:Rhodopseudomonas; D013395:Sucrose; D013431:Sulfates; D014461:Ultracentrifugation
chemical_list: D002712:Chlorides; D004269:DNA, Bacterial; D009711:Nucleotides; D013431:Sulfates; D002586:Cesium; D013395:Sucrose