African Clawed Frogs (IMAGE) Harvard Medical School Caption For more than half a century, studies on the African clawed frog (Xenopus laevis) have helped scientists better understand the biological underpinnings of life. Credit Wikimedia Commons; public domain : <a target="_blank"href="https://commons.wikimedia.org/wiki/File:Xenopus_laevis_pair.JPG">https://commons.wikimedia.org/wiki/File:Xenopus_laevis_pair.JPG</a> 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.