Retinoic Acid Signal Negatively Regulates Osteo/Odontogenic Differentiation of Dental Pulp Stem Cells. - Wang, Jiangyi; Li, Guoqing; Hu, Lei; Yan, Fei; Zhao, Bin; Wu, Xiaoshan; Zhang, Chunmei; Wang, Jinsong; Du, Juan; Wang, Songlin (Stem Cells International, 2020)