Xenopus tadpole (IMAGE) Institut du Cerveau (Paris Brain Institute) Caption Transgenic Xenopus tadpole in which the white matter (myelin) appears by fluorescence in green Credit David Akbar and Elodie Martin, Paris Brain Institute. Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. No derivatives or adaptations of the work are permitted. License CC BY-NC-ND 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.