did not reach statistical significancep = 0.0722
showed a trendp = 0.0722
Although Iba-1, a marker for microglial activation, showed a trend towards increased expression, its levels did not reach statistical significance at either 24 h ( p = 0.0722, Figure 7 A) or 1 month ( p = 0.0966, Figure 7 B) following blast exposure. 4.