title: Thymosin alpha 1 levels and helper:suppressor ratios in homosexual men.
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000209:etiology; D006716:Homosexuality; D006801:Humans; D008297:Male; D006377:T-Lymphocytes, Helper-Inducer; D050378:T-Lymphocytes, Regulatory; D000077596:Thymalfasin; D013947:Thymosin / Q000031:analogs & derivatives / Q000097:blood*; D013951:Thymus Hormones / Q000097:blood*
chemical_list: D013951:Thymus Hormones; D013947:Thymosin; D000077596:Thymalfasin