1. Interdisciplinary Laboratory of Electrochemistry and Ceramics (LIEC), Departament of Chemistry, Federal University of São Carlos (UFSCar), Rod. Washington Luis km 235, CP 676 São Carlos, São Paulo 13565-905, Brazil
2. Laboratory of Applied Immunology, Federal University of São Carlos (UFSCar), São Carlos, Rod. Washington Luis km 235, CP 676 São Carlos, São Paulo 13565-905, Brazil