Neurons (IMAGE) Howard Hughes Medical Institute Caption Neurons that control thirst in the mouse brain are switched on (green and red) when the gut senses salty fluid. Credit Knight Lab/UCSF/HHMI Usage Restrictions Must use 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.