Loss of JAK2 Favors Cancer Cells (image) University of Veterinary Medicine -- Vienna Caption The loss of JAK2 is advantageous for leukemia cells. Credit Illustration: Sabine Fajmann / Vetmeduni Vienna Usage Restrictions The illustrations may only be used in the context of this press release. 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.