illustration (IMAGE) UT Southwestern Medical Center Caption A microscope image from Dr. Williams’ lab depicts the arcuate nucleus of the hypothalamus. Green cells are POMC neurons, red cells that are neurons that express leptin receptors, and yellow cells are POMC neurons that express leptin receptors. Credit UT Southwestern Medical Center Usage Restrictions none License Original 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.