title: Balb/3T3 cells chronically infected with N-tropic murine leukemia virus continue to express Fv-1b restriction.
mesh_terms: D000818:Animals; D002460:Cell Line; D004261:DNA Replication; D007700:Kinetics; D009052:Leukemia Virus, Murine / Q000254:growth & development*; D051379:Mice; D008807:Mice, Inbred BALB C; D011995:Recombination, Genetic; D014762:Viral Interference; D014779:Virus Replication