Scale bars for hESC and hCNS-SCns are 25 ??m and 200 ??m, respectively. (b) Efficient FOX2 knockdown determined by western blotting was achieved in all cell types using actin as a loading control. (c) Cell counts using trypan blue exclusion indicates that the cell-death phenotype from FOX2 knockdown is specific to hESCs (HUES6 and H9 lines) and occurs in a dose-dependent fashion. (d) Infection of