title: Specific humoral depression in chronic patients infected by Trypanosoma cruzi.
mesh_terms: D000906:Antibodies / Q000032:analysis*; D000953:Antigens, Protozoan / Q000032:analysis*; D014355:Chagas Disease / Q000175:diagnosis / Q000276:immunology*; D006801:Humans; D012698:Serologic Tests; D014349:Trypanosoma cruzi / Q000276:immunology*
chemical_list: D000906:Antibodies; D000953:Antigens, Protozoan