Nerve Cells Communicate in a Cell Culture (image) Heidelberg University Hospital Caption Nerve cells communicate in a cell culture. The protein Neuroligin-1 is green. Bottom right: An enlarged picture of a synapse. Postsynaptic Neuroligin-1 (green) in contact with a presynaptic nerve ending (violett). Credit Institute for Anatomy and Cell Biology, Heidelberg University Hospital Usage Restrictions None 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.