(F) Mossy fiber LTP at 20 months of age. n (mice/slices) = 5-9/8-21 (NTG), 2-5/5-12 (CaMKII-tTA), 3-6/8-14 (TRE-hTau), 3-6/8-14 (hTau-WT), and 5-6/8-14 (hTau-A152T). *P < 0.05, **P < 0.01, ***P < 0.001 versus NTG by linear regression analysis with Holm adjustment (B, C) or by one-way ANOVA and Dunnett's test (D, E). No significant difference was detected by two-way ANOVA in (F). Values are means ± SEM. 