XLRS (image) University of Manchester Share Print E-Mail Caption XLRS is caused by mutations in the retinal protein retinoschisin. The protein plays a crucial role in the cellular organisation of the retina, assembling itself to form paired octameric (consisting of eight retinoschisin) rings. The rings each resemble an 8-bladed propeller. Credit The University of Manchester Usage Restrictions None 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.