Ability of Sperm to Swim against the Flow (VIDEO) American Physical Society 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 For best chances of in vitro fertilization success, the most motile sperm are chosen from semen. But current methods of sperm selection are inefficient and can cause fragmentation of the precious DNA carried in sperm heads. Afrouz Ataei has developed an alternative mechanism to sort sperm, which avoids genetic damage while also being faster and more cost-effective. Ataei will describe the device at the 2019 APS March Meeting in Boston. This video demonstrates the ability of sperm to swim against the flow. There flow is from left to right and you see some of the sperm start resisting and swimming against it. Credit Afrouz Ataei on the equipment in her advisor's (Waseem Asghar) lab Usage Restrictions Journalists may use this video only 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.