Mouse Cells HP1alpha (image) DOE/Lawrence Berkeley National Laboratory Share Print E-Mail Caption These are mouse fibroblast cells expressing HP1alpha, the human version of heterochromatin protein 1a. A technique that highlights edges between two liquid phases reveals the liquid droplets in the nucleus. Credit Amy Strom/Berkeley Lab Usage Restrictions Editorial use only. Share Print E-Mail 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.