Engineered basic fibroblast growth factor-overexpressing human umbilical cord-derived mesenchymal stem cells improve the proliferation and neuronal differentiation of endogenous neural stem cells and functional recovery of spinal cord injury by activating the PI3K-Akt-GSK-3β signaling pathwayFeifei Huang, Bin Wang, Chenxun Tai et al.|Stem Cell Research & Therapy|2021Cited by 65