Sickle Cell Red Blood Cells (IMAGE) University of North Carolina Health Care Caption Healthy blood cell (left) and sickled blood cell (right). Credit National Institutes of Health (NIH) Usage Restrictions No restrictions. License Public Domain 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.