AIDS-188894 AIDS188894 Ac-Tyr-Lys-Leu-Asp-Ile-Ile-Pro-Ile-Asp-Asn-Asp-Thr-Thr-Ser-Tyr-Thr-Leu-Thr-Ser-Cys-NH2 Ac-YKLDIIPIDN DTTSYTLTSC-NH2 Residues 177-196 of gp120/gp41