[1] Fundacao Oswaldo Cruz, Lab Histol & Embryol, Rene Rachou Res Ctr, Belo Horizonte, MG, Brazil
[2] Fundacao Oswaldo Cruz, Lab Chagas Dis, Rene Rachou Res Ctr, Belo Horizonte, MG, Brazil
[3] Univ Fed Uberlandia, Lab Immunoparasitol, Inst Biomed Sci, BR-38400 Uberlandia, MG, Brazil