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. 2014 Jun 20;15(1):67. doi: 10.1186/1465-9921-15-67

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Copyright © 2014 Weitoft et al.; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Percentage area of MMP-9 (% positively stained area) in bronchial (A) and transbronchial biopsies (B) in controls and patients with controlled and uncontrolled asthma. Representative micrographs of staining of MMP-9 (brown) from controls (C, F) and patients with controlled asthma (D, G) and uncontrolled asthma (E, H) in bronchial (C-E) and transbronchial (F-H) biopsies. Scale bars: C-E and G = 100 μm, F and H = 200 μm.