Ovum Transport (VIDEO) National Institutes of Natural Sciences This video is under embargo. Please login to access this video. Caption Celsr1 is required for the coordination of ciliary beating directions in mouse oviduct epithelium, which enables the ovum transport. Credit © NIBB Usage Restrictions The video may only be used with appropriate credit 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.