1. Department of Biochemistry and Immunology, Instituto de Ciências Biológicas; Universidade Federal de Minas Gerais; Minas Gerais; Brazil
2. Department of Biological Sciences; School of Dentistry of Bauru, Universidade de São Paulo; São Paulo; Brazil
3. Department of Microbiology, Instituto de Ciências Biológicas; Universidade Federal de Minas Gerais; Minas Gerais; Brazil