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CircMAT2B knockdown decreased OGD-induced H9c2 cells’ apoptosis. CircMAT2B knockdown or overexpression were successfully established after transfection with si-circMAT2B (a) and ex-circMAT2B (b). (c, d) Cell activity was examined through CCK-8. (e, f) Apoptosis was examined via flow cytometry. (g–j) Levels of apoptosis-related factors were detected via western blot analysis. * P < 0.05, ** P < 0.01 and *** P < 0.001 compared to indicated group
