Newfound skull tunnels may speed immune cells’ trek to brain injuries
These tiny shortcuts showed up in the bone of mice and humans
![skull channels](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2018/08/082918_ls_brain-channel_feat.jpg?fit=860%2C460&ssl=1)
HOLES IN HEAD A mouse skull is full of microscopic channels (arrows) that connect the bone to the brain’s outer membrane, an imaging method called a micro CT scan shows. Similar channels were found in people’s skulls.
Gregory Wojtkiewicz/Center for Systems Biology/Mass. Gen. Hosp.