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circ_CHFR functioned as a sponge of miR-15a-5p in HBMECs. (a) The binding sites between miR-15a-5p and circ_CHFR were predicted by starbase3.0 online database. (b) Luciferase activity was determined by dual-luciferase reporter assay in HBMECs. (c and d) QRT-PCR was employed to detect the impacts of circ_CHFR silencing and ox-LDL treatment on miR-15a-5p expression in HBMECs. *P < 0.05.
