Protein Crystals (IMAGE) Helmholtz Association Caption This shows crystallized samples of the calcium pump complex of thale cress (Arabidopsis thaliana). Credit Henning Tidow, University of Aarhus Usage Restrictions Free for use by the media when reporting about the corresponding paper. 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.