. . "ncbi_taxonomy"^^ . . "MLV-related viruses"^^ . "NCBITaxon:11762"^^ . "Mammalian type C retroviruses"^^ . "type C oncoviruses"^^ . "Gammaretrovirus"^^ . "GC_ID:1"^^ . "Mammalian type C retrovirus group"^^ . "mammalian type C oncoviruses"^^ .