Marcos d'vila Nunes, is Associate Professor at University of S達o Paulo (USP), SP, Brazil. Graduated from the Faculty of Medicine of Ribeir達o Preto / USP, in 1967. He did postgraduate studies in Advanced Theoretical Physics at the School of Engineering of S達o Carlos / USP, for the period 1968/69. He received his title of Doctor of Science and Associate Professor from Institute of Biomedical Sciences / USP in 1972 and 1977, respectively. He developed post doctorate stage for five years at the Massachusetts Institute of Technology (MIT, Harvard, Cambridge, 1974/75), Boston University Medical Center (BUMC, 1974/75), National Institutes of Health (NIH, 1976), American National Red Cros