title: Determination of virulence properties of leukemia viruses.
mesh_terms: D000818:Animals; D001483:Base Sequence; D004262:DNA Restriction Enzymes; D004274:DNA, Recombinant; D005814:Genes, Viral; D009052:Leukemia Virus, Murine / Q000235:genetics / Q000472:pathogenicity*; D007942:Leukemia, Experimental / Q000382:microbiology*; D051379:Mice; D008815:Mice, Inbred Strains; D013045:Species Specificity; D014774:Virulence
chemical_list: D004274:DNA, Recombinant; D004262:DNA Restriction Enzymes