3-D Synapse (IMAGE) Max-Planck-Gesellschaft Caption This is a three-dimensional reconstruction of a synapse in the mouse brain. Readily releasable fusionable synaptic vesicles (blue, around 45 millionths of a millimeter in diameter) are docked at the cell membrane. Credit MPI of Experimental Medicine /Benjamin H. Cooper 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.