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Inflammatory cytokines content of cells treated with different concentrations of LPS for 24 h. (A) IL-1β, (B) IL-6, and (C) TNF-α. Each treatment had three samples (n = 3) and was repeated three times to reduce system errors; “※” means there was a significant difference (P < 0.05) compared with negative control (LPS, 0 µg/ml).
