Zhao, L. Y.; Jiao, Q.; Xu, X.; Yang, P. B.; Song, T. S.; Huang, C.; Zhang, J. F.; Liu, Y. The Decreased Self-Renewal Potential of NPCs During Human Embryonic Brain Development With Reduced Activity of MAPKs. Cell Mol Biol (Noisy-le-grand) 2012, 58, 1730-36.