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. 2016 May 17;23:46. doi: 10.1186/s12929-016-0261-4

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© Yen et al. 2016

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. 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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Fig. 7 — Morphology of the developed (5-week) benign xenograft. There were no noticeable newly-formed blood vessels on the surface of either the xenograft in situ (a) or in the harvested tissue (b) or inside the developed mass with histological H&E staining (c). The benign masses appeared as pink-colored blocks and were infiltrated by fibrotic cells exhibiting cleft- or slit-like openings inside the xenografts (c, d)