1. Department of Morphology, Biological Sciences Institute, Federal University of Minas Gerais, Av. Antônio Carlos, 6627- 31.270-901, Belo Horizonte, MG, Brazil
2. Dental School, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
3. Department of Biochemistry and Immunology, Biological Sciences Institute, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil