title: Murine sarcoma virus pseudotypes acquire a determinant specifying N or B tropism from leukaemia virus during rescue.
mesh_terms: D000818:Animals; D002460:Cell Line; D002471:Cell Transformation, Neoplastic; D003673:Defective Viruses; D017988:Gammaretrovirus / Q000254:growth & development*; D006378:Helper Viruses; D009052:Leukemia Virus, Murine / Q000254:growth & development; D051379:Mice; D008807:Mice, Inbred BALB C; D008809:Mice, Inbred C3H; D009053:Sarcoma Viruses, Murine / Q000254:growth & development*; D013045:Species Specificity; D010948:Viral Plaque Assay; D014779:Virus Replication