Figure (IMAGE) Osaka University Caption The effects of Ca2+ on chromatin condensation revealed by the measurement of the change in fluorescence life time. Nucleosome was labelled by EGFP and mCharry and it enables us to monitor chromatin condensation status by measuring the change in the fluorescence life time. Higher Ca2+ concentration induces shorter fluorescence life time indicating chromatin condensation (upper panel). In contrast, lower Ca2+ induces longer life time indicating chromatin decondensation (lower panel). Bar, 100 nm. Credit Osaka University 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.