Fig. 5From: Multidimensional nanomaterials for the control of stem cell fate a, b After cultured under stimulation and without electrical stimulation for 21 days, cells were immunostained with DAPI (blue) for nucleus, Tuj1 (red) and GFAP (green). c, d After cultured under TENG electrical stimulation and without TENG electrical stimulation for 21 days. All scale bars are 100 μm [44]Back to article page