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. 2014 Dec 17;10:296. doi: 10.1186/s12917-014-0296-2

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© Guil-Luna et al.; licensee BioMed Central. 2014

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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Simple tubular mammary carcinoma. Inmunohistochemical PR labelling is seen in the nuclei of tumour epithelial cells. A strong PR + tumour at day 1 (A) and a PR - tumour at day 15 (B) [3]. ABC immunohistochemical method. Bar = 10 μm.