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Serum corticosterone levels in the rats subjected to chronic RS for 21 days. Values represent mean ± standard error of mean (N = 6). Repeated measures ANOVA: F(3, 12) = 22.547, P < 0.001; pairwise comparisons (with Bonferroni correction for multiple comparisons): *P < 0.001, Day 3 > Day 0; #P < 0.01, Day 21 > Day 0; $P < 0.001, Day 21 < Day 3
