F-actin Nucleus in 3-D (IMAGE) Rice University Caption This image shows the 3-D structure of the F-actin nucleus. The core of the two actin monomers contained in the nucleus are depicted in green and purple. Credit X. Chen/BCM Usage Restrictions For news reporting purposes 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.