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Assortment of miRNAs based on their functions and different roles in breast tumors: MicroRNAs can be divided into two general groups as tumor suppressor and oncogenic miRNAs. Each of these groups act with their specific effects on different pathways in cell as shown in the figure. Alterations in the amount of these miRNAs constitute a specific profile as microRNA profile, which is changed after resection of tumor, chemotherapy and hormonetherapy
