Figure 2

(A), the PCA plots showed a clear separation in two datasets. Blue spots represent the control group, and red spots represent the healthy people group. (B), volcano graph shows the differential gene expression, upregulated (blue box), downregulated (red box), and unchanged (gray boxes) transcripts. (C), KEGG pathway analysis for the target genes of the Important modules. COPD: chronic obstructive pulmonary disease; LUAD: lung adenocarcinoma; KEGG: Kyoto Encyclopedia of Genes and Genomes.