Good Fences Make Good Neighbors (2 of 2) (image) Salk Institute Caption Top left: Molecular fence posts (shown in green) separate active from inactive chromosomal neighborhoods areas. Top right: RNA polymerase 2 (shown in red) reads genes in active neighborhoods. Bottom left: Intact fences co-localize with areas of gene activity. Areas of overlap show up in yellow. Bottom right: DNA is shown in blue. Credit Image: Courtesy of Beverly Emerson, Salk Institute for Biological Studies Usage Restrictions News media reproduction to illustrate this story permitted with proper attribution as provided above. For one time use only. 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.