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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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Hierarchical clustering of samples of the combined datasets (GSE7929 and GSE7956) by the time course gene set. Parental lines samples were assigned as “time course 0”; metastatic derived cell lines established after one round of selection as “time course 1” (n = 24); derived cell lines after two or three rounds of selection as “time course 2”.