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LPS induces the release of IL-1β, IL-6, and TNF-α in AMs from silicosis patients. (a and b) AMs from observers or silicosis patients in the presence or absence of LPS were analyzed for IL-1β, IL-6, and TNF-α levels using an ELISA assay. Significance was determined using one-way ANOVA (n = 6. *P < 0.01 vs control).
