1. Department of Pathobiology, College of Veterinary Medicine, Texas A&M University, College Station, Texas, USA
2. Departmento de Bioquímica e Imunologia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
3. Centro de Pesquisas René Rachou, FIOCRUZ, Belo Horizonte, MG, Brasil