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circ_CHFR was highly expressed in HBMECs treated with ox-LDL. (a) circ_CHFR expression was detected by qRT-PCR in HBMECs treated with ox-LDL (10, 30 and 50 μg/mL). (b and c) RNase R and actinomycin D treatment assays were employed to demonstrate circ_CHFR was a circular RNA. *P < 0.05.
