Stem Cell (IMAGE) Penn State Caption Genome editing can be used to engineer regular human stem cells to universal donor stem cells and avoid immune rejection problems for transplantation. Credit Xiaojun Lance Lian/Penn State Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.