Leukemia Cells (image) Penn State Share Print E-Mail Caption Penn State researchers initially tested a compound produced from fish oil on a type of leukemia found in mice called the Friend Virus. This slide shows a Friend Virus Leukemia Stem Cell. Learning how to target and kill leukemia stem cells is critical to finding a cure for leukemia. Credit Robert Paulson Usage Restrictions Non commercial use only 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.