title: Analytical measurements of isopycnic density in the preparative ultracentrifuge with application to FeLV and FeLV-RNA.
mesh_terms: D000818:Animals; D002417:Cattle; D002499:Centrifugation, Density Gradient; D003016:Clostridium perfringens; D003090:Coliphages; D004247:DNA / Q000032:analysis; D004269:DNA, Bacterial / Q000032:analysis; D008433:Mathematics; D008722:Methods; D012367:RNA, Viral / Q000032:analysis*; D012190:Retroviridae / Q000032:analysis*; D013053:Spectrophotometry / Q000295:instrumentation; D013950:Thymus Gland; D014466:Ultraviolet Rays
chemical_list: D004269:DNA, Bacterial; D012367:RNA, Viral; D004247:DNA