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. 2021 May 18;27(4):294–312. doi: 10.1177/17534259211013887

Figure 2.

Figure 2.

Effect of LPS on the inflammation of alveolar type II epithelial cells. A549 cells were incubated with various concentrations of LPS (0.5, 1.0, 1.5, and 2.0 mg/l) for 24 h. IL-6, IL-1β, PGE2, and TNF-α in A549 cells were measured by ELISA. The data from three independent experiments is presented as the mean ± SEM. *P < 0.05, **P < 0.01 versus the control group. P < 0.05, the LPS (1.5 mg/l) group versus the LPS (1.5 mg/l) group and the LPS (2.0 mg/l) group. P > 0.05, the LPS (1.5 mg/l) group versus the LPS (2.0 mg/l) group.