Friend Mouse Leukemia Virus (yellow) (IMAGE) U.S. National Science Foundation Caption This is a friend mouse leukemia virus (yellow) budding from infected T-lymphocyte (blue). Credit Elizabeth Fischer and Kim Hasenkrug, NIH 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.