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Relative miR-133a levels were measured by quantitative polymerase chain reaction in the (A) human epithelial ovarian cancer OVCAR-3 cell line and (B) primary tumor samples. miR-133a expression was significantly decreased in OVCAR-3 cells compared with OSE(tsT) cells. miR-133a expression was also significantly downregulated in primary tumors compared with normal ovarian tissues. miR, microRNA; OSE, ovarian surface epithelial. *P<0.05 and **P<0.01 vs. the control group.
