The interaction of T. cruzi with the host immune system in the murine model of chronic chagas disease - Sardinha, L. R.; Grisotto, M. G.; Bucci, D. Z.; Cabral, V. F.; Bastos, K. R. B.; Marinho, Claudio Romero Farias; Alvarez, José Maria; Lima, Maria Regina D'Império (Meeting of the Brazilian Society of Immunology, 2003)