Recently, IL17 has been proposed as a pro-inflammatory mediator (similar to TNFα and TGF-β) involved in ILD development, as demonstrated in rat models, where both IL17 and TNFα (together with other cytokines) were increased (after bleomycin induction of ILD) in the lung tissue samples after hematoxylin-eosin staining [54]. The gene discussed is TGFB1; the disease is interstitial lung disease.