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. 2015 Nov 5;2:10. doi: 10.1186/s40348-015-0021-7

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© Sigler et al. 2015

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Fig. 2 — Stent strut (black structure, a) surrounded by mostly spindle-shaped cells embedded in fiber-rich connective tissue (bare metal stent; Richardson blue staining); immunohistochemical staining (brown coloring) with antibodies against smooth muscle myosin (b; bare metal stent), vimentin (c; sirolimus-eluting stent), and smooth muscle actin (d; bare metal stent) identifying the spindle-shaped cells as fibromuscular cells; newly formed epithelium with polygonal cells lining the tracheo-bronchial lumen (e; bare metal stent; Richardson blue staining); cartilage structure within the newly formed tissue (f, arrows; sirolimus-eluting stent; Richardson blue staining)