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. 2020 May 27;44(2):533–542. doi: 10.3892/or.2020.7624

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Copyright: © Ma et al.

This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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Figure 3. — Self-renewal ability of GSCs was analyzed by tumor sphere formation assay. Diameters and number of PER2-overexpressing GSCs were both lower compared with the control group. **P<0.01 vs. the control (two-tailed Student's t-test). PER2, period 2; GSCs, glioma stem cells.