title: Development of Friend leukemia virus in spleen and plasma of Swiss mice.
mesh_terms: D000818:Animals; D001769:Blood; D066298:In Vitro Techniques; D009052:Leukemia Virus, Murine / Q000254:growth & development*; D007942:Leukemia, Experimental / Q000209:etiology*; D051379:Mice; D011817:Rabbits; D013163:Splenomegaly / Q000209:etiology*