Unhibited Cancer Cells (IMAGE) Scripps Research Institute Caption Losing their inhibitions: Cells prefer not to be crowded and stop proliferating once too densely packed. A technique called proximity ligation analysis reveals an interaction between two proteins (YAP and YY1) in the nuclei of human Schwann cells. YAP and YY1, working together, can shut off this behavior. The red dots represent the interaction, nuclei are stained in blue. Credit Kissil Lab at Scripps Research 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.