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. 2016 Mar 24;16:245. doi: 10.1186/s12885-016-2265-6

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© Huang et al. 2016

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. 3 — Side population cells (S1-S4) possess higher tumorigenicity than non-side population cells (NS1-NS2). a The growth curve of xenograft tumor. NOD/SCID mice were inoculated subcutaneously with various cell numbers of SAS SP and non-SP cells, respectively, as indicated. Tumor volumes were recorded on a weekly basis. **p < 0.01, significant difference vs. NS1. b The wet weight of tumors measured after harvested at the end. *p < 0.05; **p < 0.01, significant difference vs. NS1. c Representative photographs of the tumors harvested at the end of experiment