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The expression of circ_001569 in OS. (a) The expression of circ_001569 was detected by qRT-PCR in OS tissues and adjacent normal tissues. (b) QRT-PCR was used to measure circ_001569 expression in OS cells (SaOS-2, U2OS, MG-63 and HOS) and human normal osteoblastic cells (hFOB). *P < 0.05.
