1. Department of Structural and Functional BiologyState University of Campinas—UNICAMP Bertrand Russel Av. Campinas São Paulo Brazil
2. Laboratory of Microscopy and Microanalysis, Department of BiologyUniversidade Estadual Paulista—UNESP Cristóvão Colombo St., 2265 São José do Rio Preto São Paulo Brazil
3. Department of Histology, Embryology and Cell BiologyFederal University of Goiás Samambaia II Goiânia Goiás 74001970 Brazil