... of Internal Medicine and Specialistic Medicine, Section of Respiratory Diseases, University of Catania, Catania, Italy, 2Department of Clinical and Experimental Medicine and Pharmacology, University ... days after injection of bleomy-cin, processed as previously described[16], and stained bythe van Gieson stain for collagen. The severity of fibrosiswas semi-quantitatively assessed according ... WT+salinegroup, except for the administration of zileuton as previ-ously described (N = 15).Induction of lung injury by bleomycinMice received a single intratracheal instillation of saline(0.9%)...