[Serological studies in patients with chronic Chagas' disease].
D000906:Antibodies / Q000276:immunology*; D000937:Antigen-Antibody Reactions; D014355:Chagas Disease / Q000276:immunology*; D006801:Humans; D012698:Serologic Tests; D014349:Trypanosoma cruzi / Q000276:immunology*
D000906:Antibodies
Estudios serológicos en pacientes cón enfermedad de Chagas crónica.