Combinatorial Signals of Activin/Nodal and Bone Morphogenic Protein Regulate the Early Lineage Segregation of Human Embryonic Stem Cells

Zhao Wu, Wei Zhang, Guibin Chen, Lu Cheng, Jing Liao, Nannan Jia, Yuan Gao, Huiming Dai, Jinduo Yuan, Linzhao Cheng and Lei Xiao

The Journal of Biological Chemistry 283 ( 36 ): 24991 - 25002 , 2008