Nucleus of a healthy human cell (IMAGE) Charité - Universitätsmedizin Berlin Caption Nucleus of a human cell. The HMGB1 protein (green) is normally distributed throughout the nucleus of the cell (dotted line). Pink: Nucleolus Credit © MPIMG | Henri Niskanen Usage Restrictions Image may be used to cover the accompanying press release, provided full credit is given. License Original 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.