TGFβ1 TG  mice instilled with Staphylococcus nepalensis strain CNDG showed significant worsening of lung radiological findings (Supplementary Fig. 20a, b), and significantly increased neutrophil infiltration, and enhanced alveolar epithelial cell apoptosis compared to mice receiving Staphylococcus epidermidis (Fig. 7), further corroborating the role of the pro-apoptotic peptide in acute exacerbation of pulmonary fibrosis. The gene discussed is TGFB1; the disease is pulmonary fibrosis.