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Circ-FOXM1 was overexpressed in OS cells. a The genomic loci of circ-FOXM1. b The overexpression of circ-FOXM1 in OS cells (MG-63, HOS, 143B and U2OS) compared to normal osteoblast hFOB1.19 cells, as tested by qRT-PCR. c–e Agarose gel electrophoresis, RNase R treatment and Actinomycin D treatment were used to examine the difference between circ-FOXM1 and linear FOXM1 mRNA. *P < 0.05, **P < 0.01
