Noggin versus basic fibroblast growth factor on the differentiation of human embryonic stem cells
Yan Zhang, Junmei Zhou, Zhenfu Fang, Manxi Jiang, Xuejin Chen
Neural Regeneration Research . 2013, (23): 2171 -2177 .  DOI: 10.3969/j.issn.1673-5374.2013.23.007