GFAP and Alzheimer disease: The GFAP+ cells of the Control group (average 159.6 of CA1 and 127.4 of DG) and NS group (average 161.4 of CA1 and 129.4 of DG) are less than the AD group (average 232.6 of CA1 and 239.0 of DG) (p < 0.01).