In striking contrast to the findings observed in healthy lungs, a KRT5+KRT14+ population emerged in the distal IPF lung, and accounted for a significant part of the total KRT5+ population (24 % in the bronchiolized areas, and 30 % in the fibrotic areas) (Fig. 6b). The gene discussed is KRT14; the disease is idiopathic pulmonary fibrosis.