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. 2017 May 17;9:1179299X17710016. doi: 10.1177/1179299X17710016

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© The Author(s) 2017

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (http://www.creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access page(https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Representative example of HE and CEA staining of pancreatic cancer tissue. CEA expression of tumor (T) tissue compared with adjacent normal (N) pancreatic tissue, derived from a patient with a preoperative serum CEA level <3ng/mL (A) and >3ng/mL (B) magnification 1x and 10x). The magnified image in (A) shows moderate CEA expression on the luminal side of neoplastic glands, while tumor tissue in image (B) shows an intense, circumferential CEA expression. The adjacent normal acini do not stain positive. CEA indicates carcinoembryonic antigen; HE, hematoxylin-eosin.