In the third dataset (dataset C, GSE122960) [20] also, we extracted mesenchymal cells (Supplementary Figure S5A–D) and found five sub-clusters like DCN low fibroblasts, DCN high fibroblasts, smooth muscle cells, PLA2G2A IPF fibroblasts and mesothelial cells (Figure 4A, and Supplementary Figure S6A–E). This evidence concerns the gene DCN and idiopathic pulmonary fibrosis.