NLK and idiopathic pulmonary fibrosis: Results (Figs. 3B, 4) show significantly increased NLK expression in normal‐looking (248 ± 70 cells/mm2), border (715 ± 199), and densely fibrotic (287 ± 56) tissue from IPF patients expressed compared to healthy controls (161 ± 28 cells/mm2).