Horton Group (IMAGE) UT Southwestern Medical Center Caption Researchers spearheading a $22 million grant from National Institutes of Health to study obesity are (left to right): Drs. Craig Malloy, Joel Elmquist, Joyce Repa, Elizabeth Parks, David Mangelsdorf, David Russell, Jonathan Cohen and Jay Horton. Credit UT Southwestern Medical Center Usage Restrictions Please use our credit line. 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.