title: Separation of reticuloendotheliosis virus from avian tumor viruses.
abstract: Velocity sedimentation and isopycnic density gradient centrifugation indicate that reticuloendotheliosis virus has a different mass and buoyant density than members of the avian tumor virus group. The group-specific antigen of the avian tumor virus group was not detected in concentrated and purified reticuloendotheliosis virus preparations.
mesh_terms: D001355:Alpharetrovirus / Q000145:classification* / Q000276:immunology / Q000302:isolation & purification; D000818:Animals; D000956:Antigens, Viral / Q000032:analysis; D002460:Cell Line; D002499:Centrifugation, Density Gradient; D002586:Cesium; D002642:Chick Embryo; D002645:Chickens; D002712:Chlorides; D003168:Complement Fixation Tests; D008099:Liver / Q000382:microbiology; D009858:Oncogenic Viruses / Q000145:classification* / Q000276:immunology / Q000302:isolation & purification; D010710:Phosphates; D010759:Phosphorus Isotopes; D011201:Poultry Diseases / Q000382:microbiology*; D055761:Reticuloendotheliosis, Avian / Q000276:immunology / Q000382:microbiology* / Q000662:veterinary; D013395:Sucrose; D014316:Tritium; D014529:Uridine; D014776:Virus Cultivation
chemical_list: D000956:Antigens, Viral; D002712:Chlorides; D010710:Phosphates; D010759:Phosphorus Isotopes; D014316:Tritium; D002586:Cesium; D013395:Sucrose; D014529:Uridine