A Change in the BuDs Structure (image) Centro Nacional de Investigaciones Oncológicas (CNIO) Share Print E-Mail Caption A change in the BuDs structure: before (left) and after (right) recognising a specific DNA sequence. Credit Guillermo Montoya. CNIO Usage Restrictions None Share Print E-Mail 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.