Zebrafish Brain in Response to Nmu Overexpression (image) Cell Press Share Print E-Mail Caption This image is of a brain from a five-day-old zebrafish larva showing neurons that are activated in response to Nmu overexpression. Neurons expressing the gene corticotropin releasing hormone (crh) are labeled bright green, and neurons that express cfos, a marker of general neuronal activity, are labeled magenta. The image shows that crh-expressing neurons in the hindbrain are activated by Nmu overexpression. Scale bar = 100 μm. Credit Chiu et al./Neuron 2016 Usage Restrictions Credit Required. 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.