Affiliation: | 1. Laboratory of Animal and Comparative Histology, ICB‐UFRJ, Av. Carlos Chagas Filho, 373, bloco B1‐019, Cidade Universitária, CEP: 21940‐902, Rio de Janeiro, Brazil;2. Animal Biology Department, Histology and Embryology Area, UFRRJ, Seropédica‐RJ, Brazil |