English: Diagram of Feline immunodeficiency virus (FIV) replication with sites for potential antiretroviral therapy indicated: (1) Viral attachment to cell surface receptors; (2) Viral fusion with the cell membrane; (3) Reverse transcription; (4) Nuclear translocation and integration of into host genome; (5) Viral transcription and nuclear export; (6) Viral protease and protein processing; (7) Virion assembly and maturation; (8) Virion release.