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. 2015 Jul 9;15:80. doi: 10.1186/s12876-015-0310-6

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© Huber et al. 2015

This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. 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. 2 — Squamous epithelium and esophageal squamous cell carcinoma samples showed no high intensity of carbonic anhydrase IX (CA9) expression. a. Squamous epithelium with H&E stain; b. No high CA9 expression in squamous epithelium; c. Squamous cell carcinoma with H&E stain; d. No high CA9 expression in sqaumous cell carcinoma