Expression of miR-124 in cell lines and tissues of ovarian cancer. (A) Expression of miR-124 in normal human ovarian tissues and ovarian tumors. (B) Comparison of miR-124 expression in five paired primary ovarian tumors and metastatic tissues. (C) The relative expression level of miR-124 in nine ovarian cancer cell lines. HOSE, the human normal ovarian epithelial cell line, was used as a control. Data are presented as means ± SD from three individual experiments. The symbols * and *** represent statistical significance at p < 0.05 and p < 0.001, respectively.