Stem Cells Loaded with Cancer-Killing Herpes Virus Attack a Brain Tumor Cell (image) Harvard University Share Print E-Mail Caption This shows tumor cells in green. This shows oHSV-loaded stem cells in red. This shows oHSV-infected tumor cells in yellow. Credit Khalid Shah/Massachusetts General Hospital Usage Restrictions The image may only be used with appropriate 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.