Gene Required for Sperm Production in Blood Flukes Identified (image) PLOS Share Print E-Mail Caption Schistosome testes labeled to detect DNA (turquoise) and expression of germinal histone H4 mRNAs (orange). Credit Harini Iyer and colleagues Usage Restrictions All figures and photographic images will be published under a Creative Commons Attribution License (CCAL), which allows them to be freely used, distributed, and built upon as long as proper attribution is given. Share Print E-Mail 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.