Annual HIV research conference arranged by IHV. Dr Robert Gallo holds a lecture on the history of medical research on human retroviruses. He also talks about the early discoveries of t-cell leukemia in Japanese patients, which led to the discovery of HTLV-1.

David Klatzmann is a french immunologist who has been working in an AIDS group in France since 1981. He talks about the discoveries that CD4-antigens function as receptors for the HIV virus and explains the structure of this relationship in detail.