Schematic Twist (IMAGE) National University of Singapore Caption Figure 1: This is a schematic showing Left-Right (L-R) asymmetry can develop by actin cytoskeleton (green) dynamics. Remarkably, the actin cytoskeleton always assembles into the anticlockwise orientation, but never achieves the clockwise "mirror" orientation. This internal organization allows the cell to distinguish left from right. Credit Mechanobiology Institute, National University of Singapore Usage Restrictions Please credit accordingly. 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.