Partial Mouse Cochlea (IMAGE) WashU Medicine Caption This is a close-up view of a normal mouse cochlea (left) and one missing FGF20 (right), showing gaps in sensory hair cells. Credit David M. Ornitz, MD, PhD 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.