SSC graphic (IMAGE) University of California - San Diego Caption By applying an inhibitor of the molecule AKT, UC San Diego researchers are able to favor the culture of human spermatogonial stem cells in the lab, a first step toward lab-produced sperm as a treatment for male infertility. Credit Illustrations by Vishaala Wilkinson 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.