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PCNA expression. Percentage of PCNA expression for each experimental group. Data are expressed as mean ± standard deviation. * p < 0.05 compared to baseline of the same timepoint. † p < 0.01 compared to baseline of the same timepoint. ‡ p < 0.01 compared to EPO group of the same timepoint. ◊ p < 0.01 compared to EPO group of the same timepoint.
