did not reach statistical significancep = 0.1531
P301L tau induced a significant increase in active PP1 compared with WT tau ( p = 0.0092), and PAD deletion in a P301L background caused a ninefold reduction in active PP1γ that did not reach statistical significance ( p = 0.1531) and a return to levels that were not significantly different from WT tau ( p = 0.7579).