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Methods and compositions for increased safety of stem cell-derived populations

  • US 10,179,901 B2
  • Filed: 06/10/2016
  • Issued: 01/15/2019
  • Est. Priority Date: 07/09/2009
  • Status: Active Grant
First Claim
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1. A method for reducing residual pluripotent stem cells in an in vitro differentiated cell population, comprisingculturing an in vitro differentiated cell population at an oxygen partial pressure that is less than 142 mmHg for at least 1 day and less than 10 days, andharvesting the differentiated cell population after the culturing step;

  • wherein the harvested cell population comprises less than 1 pluripotent stem cell per 103 cells,wherein 50% or more of the cells in the in vitro differentiated cell population are positive for at least one differentiation marker before the culturing step.

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