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Expression of miR-186 in (A) tumors, (B) blood and (C) urine samples from patients with bladder cancer. Reverse transcription-quantitative polymerase chain reaction was used to determine the expression of miR-186. Compared with control groups, the expression of miR-186 in tumor tissue, blood and urine samples was significantly downregulated. *P<0.05 and **P<0.01 vs. controls. Data are presented as the mean ± standard deviation. miR, micro RNA.
