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. 2014 Aug 13;9:155. doi: 10.1186/s13000-014-0155-2

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© Chen et al.; licensee BioMed Central Ltd. 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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A Box-plot of gene expression in each metastatic melanoma array of the combined dataset (GSE7929 and GSE7956). Using distance-weighted discrimination (DWD) method after frozen Robust Multi-Array Analysis (fRMA) normalization indicates a good batch effect removal.