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Comparison of miRNA expression level in breast cancer patients with different tumor stages. Note that the expression of miR‐127, miR‐133a, and miR‐342‐5p was significantly lower in higher stage. The observed difference in the expression level of miR‐199b was not statistically significant. On the other hand, miR‐155 was significantly up‐regulated in stage III in comparison with stages I and II
