title: Extranuclear DNA and the endosymbionts of Paramecium aurelia.
mesh_terms: D001345:Autoradiography; D001483:Base Sequence; D002499:Centrifugation, Density Gradient; D004247:DNA / Q000032:analysis*; D009693:Nucleic Acid Hybridization; D010247:Paramecium / Q000032:analysis*; D012313:RNA / Q000032:analysis; D012287:Rickettsiaceae / Q000032:analysis*; D014316:Tritium
chemical_list: D014316:Tritium; D012313:RNA; D004247:DNA