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A. Western blotting of miR-21 target genes of RECK, PDCD4 and PTEN following miR-21 inhibition at 48 h. B. Cellular and exosomal mRNA levels of PTEN, RECK and PDCD4 as determined by RT-qPCR (*p < 0.05, **P < 0.01). C. Flow cytometry of Annexin V staining for the evaluation of cell apoptosis following miR-21 inhibition.
