Sperm Under Microscope (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption Human sperm stained for semen quality testing in the clinical laboratory. Credit (Bobjgalindo/Wikimedia) Usage Restrictions Use 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.