title: Polymorphism among the major core proteins of C57BL B-tropic murine leukemia viruses.
mesh_terms: D000956:Antigens, Viral / Q000235:genetics; D005814:Genes, Viral; D007526:Isoelectric Point; D009052:Leukemia Virus, Murine / Q000235:genetics* / Q000276:immunology; D011110:Polymorphism, Genetic; D011995:Recombination, Genetic; D012703:Serotyping; D014758:Viral Core Proteins; D014764:Viral Proteins / Q000235:genetics*
chemical_list: D000956:Antigens, Viral; D014758:Viral Core Proteins; D014764:Viral Proteins