Crystal (IMAGE) UT Southwestern Medical Center Caption Researchers at the Peter O'Donnell Jr. Brain Institute grew crystals of nicotinic receptors, a breakthrough that scientists expect will help them develop new treatments by understanding nicotine's molecular effects. Credit Hibbs Lab, UT Southwestern Medical Center Usage Restrictions With source credit 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.