Institution: | a Departamento de Histologia e Embriologia, Centro de Ciências da Saude, Instituto de Ciencias Biomédicas, Universidade Federal do Rio de Janeiro, Ilha do Fundão, 21941-590, Rio de Janeiro, RJ, Brazil b Department of Histology and Embryology, Federal University of Pernambuco, 50670-420, Recife, PE, Brazil c Faculty of Engineering and Science, International University Bremen, P.O. Box 750561, D-28725, Bremen, Germany |