The expression of nestin and Sox2 without and with DC pulse stimulation.

<p>The percentage of immunostained cells with (A) nestin and (B) Sox2 for mouse neural stem and progenitor cells (mNPCs) cultured with (electrical field [EF]) and without (control [CTL]) square-wave DC pulse stimulation. The <i>P</i> values of Sox2 expression at 3 and 14 DIV for the CTL and EF groups were 0.080 and 0.071, respectively.</p>