XIX International AIDS Conference. Sharon Lewin from Monash University in Melbourne discusses the possibilities of ending AIDS and scientific breakthroughs during the 30 years of the epidemic, for instance the discovery that some people are resistant to HIV.

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.