Sperm Structure (2 of 2) (VIDEO) University of York This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption Virtual human sperm in cervical mucus analogue (top view): the tail is stabilized by the reinforced coating (blue). Credit Hermes Gadelha, University of York. 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.