Antibodies against trypanosoma cruzi: discrepancies among their capacities to activate the complement system and to promote lysis - Kipnis, Thereza Liberman; Pacheco, M A W; Tambourgi, D V; Sucupira, M; Alves, Maria Júlia Manso; Silva, Wilmar Dias da (Congresso da Sociedade Brasileira de Imunologia, 1986)