Mouse Brain Tissue (image) University of Pittsburgh Schools of the Health Sciences Share Print E-Mail Caption A sample image of mouse brain tissue obtained using transmission electron microscopy showing the synapse (S) between two neurons. Vesicles (V) containing neurotransmitters are waiting to be released in one of the neurons Credit Center for Biologic Imaging/University of Pittsburgh Usage Restrictions Release is embargoed until 12 p.m., Thursday, Aug. 17, 2017. Share Print E-Mail 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.