Entry: HIV binds to CD4 receptors on T-cells and merges with the cell membrane.
Reverse Transcription: Viral RNA is transformed into DNA by the reverse transcriptase enzyme.
Integration: Viral DNA is incorporated into the host genome by integrase.
Replication: The host's cellular machinery produces viral proteins and RNA.
Release: New virions are assembled and released, eventually causing T-cell destruction.
Progression: The immune system deteriorates, resulting in opportunistic infections and AIDS.