1. Department of Structural and Functional Biology; State University of Campinas; Av. Bertrand Russel s/n, Campinas São Paulo Brazil
2. Department of Biology, Laboratory of Microscopy and Microanalysis; University of Estadual Paulista - UNESP; Rua Cristovão Colombo, São Jose do Rio Preto São Paulo Brazil
3. Department of Morphology; Federal University of Goias; Samambaia II Goiania Goias Brazil