title: Are spleen focus-forming virus sequences related to xenotropic viruses and expressed specifically in normal erythroid cells?
mesh_terms: D000818:Animals; D001483:Base Sequence; D003673:Defective Viruses / Q000235:genetics*; D005622:Friend murine leukemia virus / Q000235:genetics*; D005814:Genes, Viral; D006378:Helper Viruses / Q000235:genetics*; D006412:Hematopoietic Stem Cells / Q000382:microbiology*; D009052:Leukemia Virus, Murine / Q000235:genetics*; D004915:Leukemia, Erythroblastic, Acute / Q000382:microbiology; D007942:Leukemia, Experimental / Q000382:microbiology*; D008970:Molecular Weight; D012367:RNA, Viral / Q000235:genetics; D013154:Spleen / Q000382:microbiology
chemical_list: D012367:RNA, Viral