Bioengineered Heart Muscle (IMAGE) Michigan Medicine - University of Michigan Caption A length of bioengineered heart muscle, or BEHM, grown at the University of Michigan using rat cardiac muscle cells and a fibrin gel base. Credit Ravi Birla, University of Michigan 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.