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Effects of ketamine on liver cell proliferation. Average number of PCNA-positive cells in the livers of offspring from mothers treated on (A) days 1–5 of gestation and (B) days 6–10 of gestation. Results were analyzed by two-way ANOVA followed by Tukey’s test. Values are mean ± SD, n = 10. *** p < 0.001; **** p < 0.0001.
