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DCX+ cells (black arrow) in the subdentate gyrus zone were decreased in both the 22 Gy and 22 Gy + EA group at 6 weeks postirradiation (A: control group; B: EA group; C: 22 Gy group; D: 22 Gy + EA group). Data are shown as means ± SEM, n = 4. ***P < 0.001 compared with the control group.
