Eye of Zebrafish Embryo with Enlarged Ganglion Cell Layer (image) Purdue University Share Print E-Mail Caption The eye of a zebrafish embryo deficient in NADPH oxidase 2 has an enlarged ganglion cell layer (green) and altered innervation of the brain, which leads to problems with signaling between the eyes and the brain. Credit Daniel Suter/Purdue University Usage Restrictions Please use appropriate credit. 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.