the root (no rank)
Viruses (domain)
retroid viruses (subkingdom)
Retroviridae (family)
Orthoretrovirinae (subfamily)
Lentivirus (genus)
human immunodeficiency virus type 1 (species)
HIV 1 (alias)
HIV-1 (alias)
human immunodeficiency virus 1 (alias)
[hide inferior taxa]
simian immunodeficiency virus SIVcpz (subspecies)