the root (no rank)
Viruses (domain)
retroid viruses (subkingdom)
Retroviridae (family)
Orthoretrovirinae (subfamily)
Gammaretrovirus (genus)
murine sarcoma virus (species)
[hide inferior taxa]
BALB murine sarcoma virus (subspecies)
Cas-NS-1 murine sarcoma virus (subspecies)
FBJ murine osteosarcoma virus (subspecies)
FBR murine osteosarcoma virus (subspecies)
Harvey murine sarcoma virus (subspecies)
Kirsten murine sarcoma virus (subspecies)
Moloney murine sarcoma virus (subspecies)
murine sarcoma virus 3611 (subspecies)
myeloproliferative sarcoma virus (subspecies)
NS.C58 murine sarcoma virus (subspecies)