Membrane (IMAGE) University of Göttingen Caption A dye labelled membrane seen under polarized light (arrow). This shows that molecules are oriented along the perimeter of the membrane. Credit University of Göttingen 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.