CTSH and adenoma: The distribution of these marker genes, including Epas1 for normal lung tissue (endothelial PAS domain), Slc26a4 for fibrotic/scarred tissue, Cybb for adjacent normal tissue, Hp for the bronchus/alveoli, Ctsh for the adenoma, and Msln for the membrane, showed the expected high expression patterns (Extended Data Fig. 2c).