1.   Brain imaging research is only a piece of the puzzle in understanding how the diseased brain works.

2.   Despite numerous investigations, there is no scientifically reliable evidence that aluminum is the cause, rather than the result, of a diseased brain.

3.   Snyder believes that neural stem cell activity may be quite high in normal adult brains and even higher in diseased brains.

4.   The Paracas performed successful brain surgery, using blades to excise pieces of diseased brain and skull.

5.   While relatives often donate diseased brains, researchers say the need is greater for normal, healthy brains.

6.   BSE has been blamed on the practice of feeding cattle the ground remains of other animals, including diseased brain tissue.

7.   Some experts believe stem cells eventually will be used to strengthen ailing hearts and restore function in diseased brains and damaged spinal cords.