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. 2017 May 6;148(4):417–424. doi: 10.1007/s00418-017-1574-4

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© The Author(s) 2017

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 — CD34 (a), CD133 (b) and vWF (c) immunoreactivity in a saphenous vein graft obtained from a 72-year-old CABG study participant who developed an early graft occlusion (9 months after CABG procedure). CD34 is not expressed in intimal endothelial cells. It is only present in some of the small blood vessels present in the adventitia (a′, a″ arrows heads). CD133 is strongly expressed in smooth muscle cells (IRS = 8), as well as in the endothelium lining the graft lumen (b′ arrow) and vasa vasorum (b″ arrow heads). vWF is expressed in intimal endothelial cells (c′ arrows) and individual capillaries present in the adventitia (c″ arrow heads)