Normal vs. Sickle Cell Blood Cells (IMAGE) Michigan Medicine - University of Michigan Caption Normal (left) and sickle cell (right) mouse red blood cells show the rigid, crescent-shaped "sickled" cells (arrows). Credit 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.