title: The structure of the mouse mammary tumor virus: isolation and characterization of the core.
mesh_terms: D000956:Antigens, Viral / Q000032:analysis*; D002500:Centrifugation, Isopycnic; D003902:Detergents; D004591:Electrophoresis, Polyacrylamide Gel; D005779:Immunodiffusion; D008324:Mammary Tumor Virus, Mouse / Q000032:analysis / Q000276:immunology / Q000648:ultrastructure*; D008722:Methods; D012367:RNA, Viral / Q000032:analysis; D012194:RNA-Directed DNA Polymerase / Q000032:analysis; D014764:Viral Proteins / Q000032:analysis*
chemical_list: D000956:Antigens, Viral; D003902:Detergents; D012367:RNA, Viral; D014764:Viral Proteins; D012194:RNA-Directed DNA Polymerase