Then, we performed western blot analysis both on FFPE samples from five IPF and three CTRL patients used for MS (Figure 4A) and other new FFPE samples from CTRL patients compared with other FFPE samples from new patients with IPF (Figure 4B),with specific antibodies for the selected up-regulated proteins: LCP1, LUM, OGN, PRDX2, and TAGLN2. Here, OGN is linked to idiopathic pulmonary fibrosis.