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Changes in TUNEL- and cleaved caspase-3-indices in the external granular cells. (A) TUNEL-index, (B) Cleaved caspase-3-index. Control group, MTX-treated group. Values are expressed as means ± SE. †, ††, †††: Significantly different from control at P<0.05, P<0.01 and P<0.001, respectively (Welch’s t-test). ‡‡: Significantly different from control at P<0.01 (Mann-Whitney’s U-test).
