Nanorobots in the presence of urea (IMAGE) Elhuyar Fundazioa Caption PET-CT imaging obtained 0, 25 and 45 minutes after the nanorobots were delivered in the presence of urea Credit Pedro Ramos, Cristina Simó / CIC biomaGUNE, IBEC, UAB 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.