Caron Cells (IMAGE) University of North Carolina Health Care Caption A CLR receptor (red) and a RAMP helper protein (green) localize at the surface of the cell, forming a yellow halo surrounding the bright blue nucleus. Genetic mutations in the genes that encode these proteins destroy their ability to interact at the cell surface, resulting in debilitating and lethal diseases. Credit Caron Lab, UNC School of Medicine Usage Restrictions credit properly 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.