1 Department of Histology, Embryology, and Cell Biology, Microscopy Laboratory Applied to Reproduction, Federal University of Goiás, Av. Esperança, s/n, Campus Samambaia, Goiânia, Goiás, 74690-900, Brazil.
2 Department of Biology, São Paulo State University, São José do Rio Preto, São Paulo, Brazil.
3 Department of Structural and Functional Biology, State University of Campinas, Campinas, São Paulo, Brazil.
4 Department of Histology, Embryology, and Cell Biology, Microscopy Laboratory Applied to Reproduction, Federal University of Goiás, Av. Esperança, s/n, Campus Samambaia, Goiânia, Goiás, 74690-900, Brazil. manoel_biancardi@ufg.br.