The genome, the structural and regulatory proteins of HIV-1, as well as the
clinical course of the disease it induces are well studied. Despite this k
nowledge, it is still unknown how the virus induces AIDS. The disease is ch
aracterized by opportunistic infections based on a generalized and nonspeci
fic immunosuppression. I present evidence indicating that the immunosuppres
sive domain of gp41 of HIV may be causually involved in the induction and p
rogression of AIDS.