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IL-22 was upregulated in osteosarcoma cell lines. The levels of IL-22 in the 4 osteosarcoma cells lines MG63, SOSP-9607, U2OS, and SAOS2 and normal osteoblast cell line hFOB1.09 were detected by qRT-PCR. Data are expressed as mean ± standard error. *** P<0.01 vs. hFOB1.09 cells.
