Bovine Sperm (IMAGE) Technische Universität Dresden Caption This is bovine sperm in bright-field microscopy with differential interference contrast. Credit Copyright: Dr. Veronika Magdanz 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.