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. 2019 Sep 14;476(2):179–194. doi: 10.1007/s00428-019-02662-1

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© The Author(s) 2019

Open Access This 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. 3 — Visualization of coronary collaterals in post-mortem angiograms. Contrast filling of right coronary artery (RCA) shows retrograde filling through collaterals of a large marginal branch of occluded left coronary artery (a). Contrast filling of RCA of another heart shows extensive ‘bridging collaterals’ surrounding a chronic total occlusion of the artery (b)