Mature Calyx of Held Terminals (VIDEO) Max Planck Florida Institute for Neuroscience This video is under embargo. Please login to access this video. Caption Whole reconstructions of mature calyx of Held terminals contacting six principal cells of the medial nucleus of the trapezoid body using serial block-face scanning electron microscopy (SBF-SEM). Credit Max Planck Florida Institute for Neuroscience and Univeristy of Iowa 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.