Trypanosoma cruzi: cloning and expression of an antigen recognized by acute and chronic human chagasic sera - Paranhos, G S; Cotrim, Paulo César; Mortara, R A; Rassi, A; Corral, R; Freilij, H L; Grinstein, S; Wanderley, J; Camargo, Mario Endsfeldz; Silveira, J F (Experimental Parasitology, 1990)