Characterization of Axon Formation in the Embryonic Stem Cell-Derived Motoneuron oleh Hung-Chuan Pan, Ya-Ting Wu, Shih-Cheng Shen, Chi-Chung Wang, Ming-Shiun Tsai, Fu-Chou Cheng, Shinn-Zong Lin, Ching-Wen Chen, Ching-San Liu, Hong-Lin Su