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Human embryonic stem cells (red) engrafted in a mouse kidney

Human embryonic stem cells (red) engrafted in the kidney of a mouse. The mice used in this experiment are lacking an immune system and will therefore not reject human stem cells. This trait makes them ideal for testing the safety and effectiveness of human embryonic stem cell-based therapies.

 

Photo courtesy of Jan Nolta at the University of California, Davis.

 

Learn more about CIRM-funded stem cell research: www.cirm.ca.gov

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Uploaded on July 30, 2009
Taken on July 30, 2009