Prien_Sam_TTUHSC.jpg (IMAGE) Texas Tech University Health Sciences Center Caption TTUHSC’s Samuel Prien, Ph.D., (pictured) and fellow researcher Lindsay Penrose, Ph.D., completed a study that provided preliminary results of their newest collection technology system design for a one-step method for healthy sperm selection. Credit TTUHSC Usage Restrictions None License Original 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.