Stem Cells Engineered with 'Suicide Genes' Offer a Double Fail-Safe Approach (image) Diabetes Research Institute Foundation Share Print E-Mail Caption Colony of stem cells genetically modified with a double fail-safe mechanism to control the formation of tumors and the differentiation into non-desirable cell types. Cells are stained for the stem cell markers SOX2 (green) and TRA-1-60-R (red). A nuclear marker is shown in blue. Credit Diabetes Research Institute, University of Miami Miller School of Medicine Usage Restrictions with proper credit Share Print E-Mail 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.