Neurons in NTS (IMAGE) University of Pennsylvania School of Medicine Caption Fluorescence in-situ hybridization image of neurons (blue) in the NTS of a rat brain showing the expression of the GLP-1R (red) on GABA neurons (green). Credit Penn Medicine Usage Restrictions Please credit Penn Medicine 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.