Cancer cells get help migrating through the body
Some fibroblasts straighten connective fibers to create easy-to-travel paths
![head and neck cancer cells](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2015/12/121415_ti_cancer-tracks_free.jpg?fit=860%2C460&ssl=1)
MAKING TRACKS Head and neck cancer cells (red) crawl along tracks (green) laid down by cancer-associated fibroblasts. Such tracks may help cancer spread throughout the body.
B. Erdogan and Donna Webb/Vanderbilt Univ.