Human Cell Nucleus (IMAGE) New York University Caption Human cell nucleus with fluorescently labeled chromatin (green), nucleolar granular component (magenta) and nucleolar dense fibrillar component (blue). Credit Christina M. Caragine and Alexandra Zidovska, New York University. Usage Restrictions Use in conjunction with this study only. 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.