<i>Xenopus</i> Tadpoles (IMAGE) McGill University Caption This shows transparent Xenopus tadpoles. Credit David Freiheit Usage Restrictions Image must only be used in context of this study 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.