Fig. 3

Evidence of damage to the lung elastic fiber system in animals treated with a single instillation of gastric fluid and studied at 4, 12 and 24 h and at day 4 after instillation. Representative fields illustrating elastic fiber system distribution in lung samples from control and acute lung injury induced by gastric fluid. Elastic fibers are stained in deep violet within alveolar walls (arrows). Photographs were taken at an original magnification of 600X from slides stained with orcein