Rods And Cones In The Retina (IMAGE) West Virginia University Caption New research from the WVU School of Medicine explores a parallel between how cancer grows and how a healthy eye renews its photoreceptors. Assistant professor Jianhai Du is studying the role that a specific protein plays in regenerating membranes that cover the eye's rods and cones (like the ones illustrated here). Tumor cells use the protein in a similar way to replicate themselves. Credit Stock photo Usage Restrictions None License Licensed content 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.