Twisty chains of proteins keep cells oriented
Curved fibers enable cells to tell right from left
![actin filaments](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2015/06/062715_sci_vis.jpg?fit=860%2C460&ssl=1)
CURVED SPOKES Actin filaments (yellow; cell nucleus in magenta) tilt counterclockwise as they extend inward, helping a cell distinguish right from left.
Y.H. Tee et al. Nature Cell Biology 2015