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The concentrations of inflammatory cytokines IL-1β, IL-6 and TNF-α in cell supernatant were recorded by an enzyme-linked immunosorbent assay (ELISA) kits. The concentration of LPS with 10 μg/ml was used to induce the inflammation. The values are presented as the mean ± standard deviation. **P < 0.01 compared with the LPS group; ##P < 0.01 compared with the control group.
