Synapses with and without MK2/3 (IMAGE) University of Warwick Caption Synapses are shown with (Fig 1) and without (Fig 2) MK2/3. Credit University of Warwick 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.