Gao, X.; Li, X.; Qian, C.; Li, F.; Zhang, Y.; Dang, L.; Xiao, X.; Liu, F.; Li, H.; Zhang, X. MiR-21 Functions Oppositely in Proliferation and Differentiation of Neural stem/Precursor Cells via Regulating AKT and GSK-3β. Cell Mol Biol (Noisy-le-grand) 2016, 62, 144-149.