How Does The Immune System Protect The Brain? UM Research Offers New InsightLike a police officer calling for backup while also keeping a strong hold on a suspected criminal, immune cells in the brain take a two-tier approach to fighting off a threat, new research from the University of Michigan Health System finds.

More From CBS Detroit

Guide: Last Minute Valentine's Day IdeasYou've got less than a week to plan the most romantic night of the year. Better get going!
Best Places To Get A Hot Toddy
Best Sledding Hills

Watch & Listen