"ncbi_taxonomy"^^ . "AKR murine leukemia virus"^^ . "NCBITaxon:11831"^^ . "GC_ID:1"^^ . "AKV murine leukemia virus"^^ . . "Murine retrovirus Akv"^^ . "NCBITaxon:11789"^^ . "AKR (endogenous) murine leukemia virus"^^ . .