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Takehara, T., Teramura, T., Onodera, Y., Hamanishi, C., and Fukuda, K. (2012) Reduced oxygen concentration enhances conversion of embryonic stem cells to epiblast stem cells. Stem Cells Dev 21, 1239-1249& ^/ W. |3 Y3 r* F! i! z3 u, a
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