A morphological analysis of the transition between the embryonic primitive intestine and yolk sac in bovine embryos and fetuses - Maçanares, Celina Almeida Furlanetto; Leiser, Rudolf; Favaron, Phelipe Oliveira; Carvalho, Ana Flávia de; Oliveira, Vanessa C. de; Santos, José Manoel dos; Ambrósio, Carlos Eduardo; Miglino, Maria Angélica (Microscopy Research and Technique, 2013)