Retinoic acid and the evolutionary origin of cardiac chambers - Simões-Costa, Marcos S.; Vasconcelos, Michelle; Sampaio, Allysson Coelho; Cravo, Roberta Mascioli; Linhares, Vania L.; Hochgreb, Tatiana; Yan, Chao Yun Irene; Davidson, Brad; Xavier-Neto, José (Congress of the Brazilian Society for Cell Biology, 2004)