Pulmonary fibrosis decreased (p < 0.05) the number of hemangiogenesis precursors (CD45−CD117+CD309+), endothelial progenitor cells (CD45−CD31+CD34+) VEGF2+ endothelial cells (CD309+CD45−), epithelial cells (CD45−Ter119−CD326+), and Clara cells (CD45−CD34−CD31−Sca1+) in the lungs of group 2 mice compared to group 1 mice (d21) (Figure 3, Supplementary Materials Figure S3). Here, KDR is linked to pulmonary fibrosis.