The picture on the left is a photograph taken of brain tissue mounted on a slide. The tissue was cut into 50 micron thick coronal sections on a freezing microtime. After being mounted on a slide, the tissue was nissel stained. The stain adheres to cell bodies, and therefore the dark patches in the photo are nuclear groups and the white patches are connective tissues.

Click this think to see the brain photo labeled .

Click this link to see a tracing of the photo with important areas outlined and labeled. Solid lines represent boundaries of connective tissues and dotted lines represent boundaries of nuclear groups.

Click this link to see the brain photo  again