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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. 3 — High carbonic anhydrase IX (CA9) expression in precancerous lesions. The samples showed strongly positive staining predominantly in the cell membrane. a, Columnar cell metaplasia (score 3). b, Barrett esophagus (score 3). c, Low-grade dysplasia (score 3) d, High-grade dysplasia (score 3)