Daniel R Brison, Stockholm University (IMAGE) Stockholm University Caption Professor Daniel R Brison, PhD, FRCPath Scientific Director, Department of Reproductive Medicine, Manchester University NHS Foundation Trust Credit Manchester University NHS Foundation Trust Usage Restrictions Free use of the media in connection to news article or feature with connection to the press release "Human eggs prefer some men's sperm over others, research shows" 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.