Fig. 2

Volcanomap of differential expressed molecules. Comparison of differential expressed differtially expressed mRNAs (A), differentially expressed miRNAs (B), differentially expressed lncRNAs (C), and differentially expressed circRNAs (D) in pre- and post-exercise COPD groups. Total numbers of DE-molecules were shown in (E). Red dots represent upregulation, green represent downregulattion and gray represent non-differential. Differentiallly expressed molecules were identified as P < 0.05 and log2 [fold change] > 1