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. 2017 Jan 1;8(1):39–47. doi: 10.7150/jca.16736

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© Ivyspring International Publisher. This is an open access article distributed under the terms of the Creative Commons Attribution (CC BY-NC) license (https://creativecommons.org/licenses/by-nc/4.0/). See http://ivyspring.com/terms for full terms and conditions.

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Vascular pattern types in 168 HCC tissues assessed by immunohistochemical staining for CD34. (A) HCC tissues from two different patients have abundant capillary-like vessels but have absolutely no VETCs, which were classified as VETC^-. (B) HCC tissues from two different patients showed distribution of VETC structure in a whole HCC section, which were classified as VETC⁺. (C) HCC tissues from two different patients displayed mixed vascular structure containing both VETC and capillary-like structure, which were classified as VETC^±.