Anti-Excitotoxic Effects of N-Butylidenephthalide Revealed by Chemically Insulted Purkinje Progenitor Cells Derived from SCA3 iPSCs oleh Hsin-Han Yang, I-Tsang Chiang, Jen-Wei Liu, Jeanne Hsieh, Jui-Hao Lee, Huai-En Lu, Hwa-Sung Tso, Yu-Chen Deng, Jo-Chi Kao, Jhen-Rong Wu, Horng-Jyh Harn, Tzyy-Wen Chiou