Abstract: Purified human leukocyte dialysates are described for treatment of AIDS, ARC, and other immunodeficient conditions. The dialysates are purified by HPLC processes, and are made available in a form that is free of endotoxin and pyrogen. A dialysate designated Beta-1.11 is found by amino acid sequencing to consist essentially of endogenous Tyr-Gly. A dialysate designated Beta-1.12 is found by amino acid sequencing to consist essentially of endogenous Tyr-Gly-Gly.