Gamma Peptide Nucleic Acid (IMAGE) Carnegie Mellon University Caption A peptide nucleic acid developed at Carnegie Mellon is part of a gene editing system that has cured a blood disorder in mice. Credit Carnegie Mellon University Usage Restrictions Credit: Carnegie Mellon University 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.