Modulation of class II MHC expression in human cells infected with Trypanosoma cruzi - Fonseca, S. F.; Coelho, V.; Teodoro, C.; Umezawa, Eufrosina Setsu; Nascimento, M. S.; Kalil Filho, Jorge Elias; Cunha Neto, E. (Meeting of the Brazilian Society of Immunology, 2000)