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. 2017 Jun 5;19:66. doi: 10.1186/s13058-017-0857-y

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© The Author(s). 2017

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. 1 — Expression of the INHBA/follistatin (FST) axis is altered in human breast cancers. Relative (a) INHBA and (b) FST expression in normal breast versus breast cancer using publicly available datasets from The Cancer Genome Atlas (TCGA). c Relative FST expression in normal breast stroma versus breast cancer stroma in the Finak et al. dataset. d Western blot analysis of FST protein expression in immortalized, nontransformed mammary epithelial cells (NT) and breast cancer cell lines representing luminal, human epidermal growth factor receptor 2-positive (HER2+), and triple-negative breast cancer (TNBC) subtypes