title: Letter: Immunosuppressive peptidea in patients with cancer.
mesh_terms: D006801:Humans; D007166:Immunosuppressive Agents / Q000032:analysis; D009369:Neoplasms / Q000032:analysis*; D010455:Peptides / Q000032:analysis / Q000302:isolation & purification
chemical_list: D007166:Immunosuppressive Agents; D010455:Peptides