Many of the detected proteins in the LPS animals and LPS ECMO animals were all well‐recognized biomarkers for ALI and ARDS, including FAS ligand, vascular endothelial growth factor‐A (VEGF‐A), MCP‐1, C‐X‐C motif chemokine 10 (CXCL10), and MMP‐1 (Bless et al., 2000; Hergrueter et al., 2011; Lang et al., 2017). Here, FAS is linked to acute respiratory distress syndrome.