1602 Interesting Odd Science Living With Your Partner Makes Your Bodies More Similar February, 2016 ZPDSK 0 Comments The University of Leuven examined the immune systems of 700 people by taking blood samples. Then they tracked around 150 of those people over six months, seeing how their immune systems changed in response to changes in the environment. The most unexpected discovery was that people in couples are remarkably similar. Source: Quartz.com