Structural Model of Mammoth Hemoglobin (IMAGE) University of Adelaide Caption This is the structural model of the mammoth hemoglobin, with the three key changes to the protein highlighted in red. Credit Illustraton by Ansgar Philippsen 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.