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. 2015 Dec 15;10:46. doi: 10.1186/s13027-015-0041-x

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© Santoro et al. 2015

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. 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. 5 — Immunocytochemical expression of CK19 in HPV⁻ OSCC cell line (SCC-131) and in HPV⁺ OSCC cell line (SCC-154). The two cell lines were both positive to CK19 antibody but showed a different level of expression. a. Note that the UPCI-SCC-131 cell line showed a lower level of expression, with mostly moderate, focally strong intensity of the staining. b. UPCI-SCC-154 cell line had a higher level of expression, characterized by strong intensity and a diffuse pattern. (LSAB-HRP, nuclear counterstaining with haematoxylin; original magnification, x200)