FerriTag (1 of 2) (IMAGE) University of Warwick Caption FerriTagging of a protein called HIP1R in clathrin-coated pits. Tagging of HIP1R can be tracked by light microscopy and electron microscopy. Location of Ferritin is shown by red dots in the pit profiles below. Credit University of Warwick 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.