Dazl Genes (IMAGE) Case Western Reserve University Caption Tissue from a mouse that has a functional Dazl gene, with fluorescent-labeled germ cells (left), and tissue from a mouse lacking the Dazl gene (right). Credit Case Western Reserve University School of Medicine 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.