Figure 1. Differentially expressed gene analysis and functional enrichment analysis. (A) The differentially expressed genes in ARDS samples compared to control samples. (B) Cluster analysis showed the expression patterns of the common up-regulated or down-regulated genes in the four data sets can distinguish ARDS and control. (C) Functional enrichment analysis of biological processes for the common the common up-regulated and common down-regulated genes in the four data sets. (D, E) Gene Set Enrichment Analysis results.