Chairs: Jeffrey Lifson (National Cancer Institute) and Ruth Ruprecht (Texas Biomedical Research Institute)
- 4.0.1 Jeffrey Lifson — Session 4, Introduction 1
- 4.0.2 Ruth Ruprecht — Session 4, Introduction 2
- 4.1 Ronald Desrosiers — The Origin of SIVmac: Non-human Primate Models for HIV
- 4.2 Martine Peeters — On the Road to HIV: Primate Lentiviruses
- 4.3 Beatrice Hahn — Apes to Humans: The Origin of HIV
- 4.4 Michael Worobey — Spread of HIV in the New World