the root (no rank)
Viruses (domain)
retroid viruses (subkingdom)
Retroviridae (family)
Orthoretrovirinae (subfamily)
Gammaretrovirus (genus)
MLV-related viruses, mammalian type C oncoviruses (common name)
[hide inferior taxa]
baboon endogenous virus (species)
feline endogenous virus (species)
feline leukemia virus (species)
feline sarcoma virus (species)
gibbon ape leukemia virus (species)
gibbon leukemia virus (species)
koala retrovirus (species)
mink cell focus-forming virus (species)
murine leukemia virus (species)
murine sarcoma virus (species)
porcine endogenous retrovirus (species)
Rasheed rat sarcoma virus (species)
rat leukemia virus (species)
reticuloendotheliosis virus (species)
simian sarcoma virus (species)
simian sarcoma-associated virus (species)
spleen focus-forming virus (species)