1. Department of Cell Biology-Institute of Biology; State University of Campinas-UNICAMP; Campinas São Paulo Brazil
2. Department of Biology, Laboratory of Microscopy and Microanalysis, Institute of Biosciences; Humanities and Exact Sciences-IBILCE, UNESP-Sao Paulo State University; Sao Jose do Rio Preto São Paulo Brazil
3. Department of Morphology, Institute of Biosciences; UNESP-São Paulo State University; Botucatu São Paulo Brazil