Subsequently, to establish the bleomycin-induced pulmonary fibrosis mouse model, both the AT2 cell-specific Lonp1 knockout mice group (SftpcCreERT2; Lonp1flox/flox) and the littermate control group (SftpcCreERT2; Lonp1flox/+) were treated with a tracheal instillation of bleomycin or physiological saline. This evidence concerns the gene LONP1 and pulmonary fibrosis.