PKC Model (IMAGE) University of California - San Diego Caption Study co-authors Corina Antal (left) and Julia Callender (right) are holding the pieces of a new PKC model. Credit UC San Diego Health Usage Restrictions use photo credit as indicated 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.