Gleevec Blocks tPA-related Bleeding (IMAGE) Michigan Medicine - University of Michigan Caption These images show mouse brains in which strokes have been induced, and tPA delivered. The left image is a mouse that received tPA, the right image shows a mouse that received tPA and imatinib (Gleevec). The chart shows the levels of hemoglobin in the brains of control and imatinib-treated mice 24 hours after the induced stroke. Credit University of Michigan/Karolinska Institutet 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.