Axon Initial Segments Their Synapses (IMAGE) King's College London Caption Axon initial segments (blue) and the synapses that form along them (red and green) are shown. Credit Winnie Wefelmeyer. MRC Centre for Developmental Neurobiology 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.