title: ATTEMPT AT CLASSIFICATION OF MOUSE LEUKEMIA VIRUSES. MOUSE LEUKEMIA VIRUS TYPE A AND THE FRIEND VIRUS.
mesh_terms: D000818:Animals; D002965:Classification; D005622:Friend murine leukemia virus; D007938:Leukemia; D009052:Leukemia Virus, Murine; D007945:Leukemia, Lymphoid; D008214:Lymphocytes; D051379:Mice; D009858:Oncogenic Viruses; D012106:Research; D014776:Virus Cultivation
keywords: CLASSIFICATION; EXPERIMENTAL LAB STUDY; LEUKEMIA, LYMPHOCYTIC; MICE; MOUSE LEUKEMIA VIRUSES; ONCOGENIC VIRUSES; VIRUS CULTIVATION