The two types of brain tissues are white matter and grey matter. Your brain is about ... tissue that connects parts of your brain and spinal cord that help your nerves talk to one another.

More research is needed to confirm gray matter, the darker tissue found in the brain and spinal cord, “as a potential disease ...

The spinal cord has gray and white matter, just like the brain. The brain and the spinal cord contain the same essential materials, but organize them differently. In the brain, the gray matter ...