1. Laboratory of Comparative Pathology; Department of General Pathology; Biological Sciences Institute; Federal University of Minas Gerais (UFMG); Belo Horizonte Brazil
2. Department of Veterinary Clinic and Surgery; School of Agricultural and Veterinary Sciences; São Paulo State University (FCAV/UNESP); Jaboticabal Brazil
3. University José do Rosário Vellano (UNIFENAS); Alfenas Brazil