Antigens of trypanosoma cruzi with clinical interest cloned and expressed in escherichia coli - Silveira, J F; Paranhos, G S; Cotrim, Paulo César; Mortara, R A; Camargo, Mario Endsfeldz; Rassi, A; Wanderley, J; Corral, R; Freilij, H L; Grinstein, S; Degrave, W (Memorias do Instituto Oswaldo Cruz, 1990)