Marmoset Trill-Twitter Call (AUDIO) Johns Hopkins Medicine Your browser does not support the audio element. Caption This is a common marmoset vocalization. Credit Xiaoqin Wang Laboratory, Johns Hopkins Medicine Usage Restrictions None 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.