Spheroids Mimic the Blood-Brain Barrier (IMAGE) Brigham and Women's Hospital Caption Blood-brain-barrier spheroids present high level of efflux pump (left: green) and tight junctions (center and right: green) on the surface of each spheroid to keep foreign molecules out. Credit Courtesy of Choi-Fong Cho, Brigham and Women's Hospital Usage Restrictions Reporters may freely use this image in their coverage of this paper with credit to Choi-Fong Cho, Brigham and Women's Hospital 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.