Figure 2

The expression of miRNAs (miR-1258, miR-182-3p, miR-148a-3p, miR-27a-5p,miR-660-5p and miR-497-5p) in SCOPD (n = 18) and AECOPD (n = 19) patients in pre-experiment. *: the difference between different groups was statistically significant (p < 0.05); **: the difference between different groups was statistically significant (p < 0.01).