1. Department of Physiology; Institute of Bioscience; Sao Paulo State University-UNESP; Botucatu SP Brazil
2. Department of Anatomy; Institute of Bioscience; Sao Paulo State University-UNESP; Botucatu SP Brazil
3. Department of Animal Morphology and Physiology; Sao Paulo State University-FCAV; Jaboticabal SP Brazil