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miR-21-5p expression in A549 cells are upregulated along with LPS-treated. The mRNA levels of IL-1β and TNF-α were detected by RT-qPCR in four groups in A549 cells including the control group and LPS treatment group for 6 h,12 h and 24 h (n = 3). All data are shown as the mean ± SEM. ****P ≤ 0.0001, ***P ≤ 0.001, **P < 0.01, *P < 0.05; NS, not significant (P > 0.05).
