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Hart’s Elastin stain of histological slides of the lungs of saline-treated (A) and elastase-treated mice (B) 21 days after injection. Morphometry shows the quantification of the elastin content when adjusted for total tissue area (C). All morphometrical data is expressed as mean ± SEM, n = 5 for control and elastase-treated mice. # = p < 0.05.
