AIDS-188911 AIDS188911 Ac-Arg-Ala-Ile-Arg-His-Ile-Pro-Arg-Arg-Ile-Arg-Gln-Gly-Leu-Glu-Arg-Ile-Leu-NH2 Ac-RAIRHIPRRI RQGLERIL-NH2 Residues 838-855 of gp120/gp41