title: Genetic control of chick helper factor in cells which lack natural group-specific antigen of avian leukosis.
mesh_terms: D000956:Antigens, Viral; D001354:Avian Leukosis Virus / Q000254:growth & development / Q000276:immunology*; D002460:Cell Line; D004121:Dimethyl Sulfoxide; D005799:Genes, Dominant; D005838:Genotype; D006378:Helper Viruses / Q000276:immunology*
chemical_list: D000956:Antigens, Viral; D004121:Dimethyl Sulfoxide