Ilchenko, S.I., Fialkovska, A.O. and Skriabina, K.V. 2021. Relationship between nitric oxide levels and the activity of fibrogenic cytokine TGF-β1 and their role in diagnostics of the development of irreversible morphofunctional changes in bronchi of smoking adolescents. Pathologia. 18, 2 (Aug. 2021), 189–195. DOI:https://doi.org/10.14739/2310-1237.2021.2.225193.