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. 2014 Dec 11;19(1):66. doi: 10.1186/s40001-014-0066-4

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© Bai 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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Cell apoptosis induced by treatment of 5-aza-2-deoxycytidine. The percentage of apoptotic cells was calculated by flow cytometry using the Annexin-V/PI double-staining assay. Control vs. 5AZA (*P <0.05). (A) (Control) Apoptosis of U251 cells in the group without 5-aza-dC treatment (8.75); (B) (5AZA) Apoptosis of U251 cells in the 5 mL 5-aza-2-dC group (15.25).