A Cross-Section of a Zebrafish (image) Canadian Light Source, Inc. Caption This cross-section of a zebrafish eye shows the localization of mercury in the outer segments of photoreceptor cells. Credit Malgorzata Korbas, Barry Lai, Stefan Vogt, Sophie-Charlotte Gleber, Chithra Karunakaran, Ingrid J. Pickering, Patrick H. Krone, and Graham N. George. 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.