Summary: A team of scientists who were trying to identify neurons that drive instinctive behaviors in mice uncovered something surprising on the way: brain cell types that exist only in female or male animals.
![](https://www.braininitiative.org/wp-content/uploads/2019/10/mouse_02.jpg)
A collaborative team of researchers at the California Institute of Technology and the Allen Institute uncovered brain cell types specific to female or male mice.