title: [Use of ultrasonic waves in the preparation of an antigen for the diagnosis of Chagas' disease using complement fixation. Preliminary note].
mesh_terms: D014355:Chagas Disease / Q000175:diagnosis*; D003165:Complement System Proteins; D006801:Humans; D055633:Immune System Phenomena; D014352:Trypanosomiasis; D014465:Ultrasonics; D014481:United States
chemical_list: D003165:Complement System Proteins
keywords: COMPLEMENT; TRYPANOSOMIASIS, SOUTH AMERICAN/diagnosis; ULTRASONICS