Neurexin

Neurexin is like a key that helps our brain cells talk to each other. Just like you need a key to open a door, the brain cells need neurexin to help them communicate. It's a special protein that's found in our brain and helps the cells connect with each other.

You know how you have a lot of toys and sometimes they need to fit together just right to work? Well, neurexin is kind of like that! It helps the brain cells fit together and communicate properly. Without neurexin, it can be hard for our brain cells to talk to each other and that can cause problems.

So, basically, neurexin is really important for our brain cells to work together and help us think, learn, and do things. It's like the key that unlocks the door to our brain's communication system.