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Effect of electroacupuncture at the Baihui (DU20) acupoint on cell apoptosis using a TUNEL assay. (A) TUNEL staining in the hippocampus of each group (magnification, ×400). Red arrows indicate TUNEL-positive cells. (B) The percentage of TUNEL-positive cells from each group. **P<0.01 vs. the WT group; ##P<0.01 and ΛP 0.05 vs. the APP/PS1 group. Each group, n=5. TUNEL, terminal deoxynucleotidyl transferase dUTP nick end labeling; WT, wild-type; NA, non-acupoint.
