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Epigenetic signatures of miRNA expression. Relative expression of miR-1, miR-133b, and miR-206 (as indicated) in undifferentiated cells obtained from skeletal muscle of female subjects that saw both decreased (A) and increased (B) production before (empty bars) and after (dotted bars) exercise training. Data came from three independent experiments, each performed in triplicate. *, p < 0.05; **, p < 0.01; ***, p < 0.0001.
