title: Isolation of noninfectious particles containing Rous sarcoma virus RNA from the medium of Rous sarcoma virus-transformed nonproducer cells.
mesh_terms: D000818:Animals; D001358:Avian Sarcoma Viruses / Q000302:isolation & purification*; D002499:Centrifugation, Density Gradient; D002642:Chick Embryo; D046508:Culture Techniques; D012367:RNA, Viral / Q000032:analysis*; D014316:Tritium; D014529:Uridine / Q000378:metabolism
chemical_list: D012367:RNA, Viral; D014316:Tritium; D014529:Uridine