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. 2016 Apr 5;11(4):e0152987. doi: 10.1371/journal.pone.0152987

Fig 3. Representative photomicrographs of orcein stained elastin fiber in cross sections of intercostal and muscular pulmonary arteries.

Fig 3

Images from A to C represent intercostal arteries sections. The intima in A (COPD) is thicker than in the smokers (B) and the non-smokers (C) group. Images from D to F show the muscular pulmonary arteries sections of COPD (D), smokers (E), and non-smokers (F). Vessel remodelling, characterized by thickening of the intima layer, is more evident in the COPD group. Elastin-orcein stain, scale bar = 100μm.