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. 2014 Nov 28;14:890. doi: 10.1186/1471-2407-14-890

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© Li et al.; licensee BioMed Central Ltd. 2014

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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Immunohistochemical analysis of CD30 expression in extranodal natural killer T-cell lymphomas, nasal type (ENKTL). A and B, representative images of CD30-positive tumor cells showing strong cell membrane staining (brown) (magnification in A × 100, B × 400); C and D, representative image of CD30-negative tumor cells showing no membrane staining (magnification in C × 100, D × 400).