Working to Make Blood Transfusions Safer (IMAGE) University of Houston Caption University of Houston biomedical engineer Sergey Shevkoplyas uses only a tiny fraction of units of blood for research from local blood banks that are either close to expiration or already expired. Credit Cullen College of Engineering Office of Communications 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.