Weng W, Stemple DL. Nodal signaling and vertebrate germ layer formation. Birth Deffects Res C Embryo Today. 2003; 69:325–32.
53
Vincent SD, Dunn NR, Hayashi S, Norris DP, Robertson EJ. Cell fate decisions within the mouse organizer are governed by graded Nodal signals. Genes Dev. 2003; 17:1646–62.
