[reverett123]

What makes this VERY interesting is that the cells are lining the hollow spaces inside the brain which are, in turn, filled with circulating cerebral spinal fluid. That means that if a substance is found to activate them, a simple injection into the spine - like a reverse spinal tap - may be all that is needed because it bypasses the BBB. Cool.

http://www.sciencedaily.com/releases...0724150437.htm

"cienceDaily (July 26, 2008) — Adult stem cells originate in a different part of the brain than is commonly believed, and with proper stimulation they can produce new brain cells to replace those lost to disease or injury, a study by UC Irvine scientists has shown.

Evidence strongly shows that the true stem cells in the mammalian brain are the ependymal cells that line the ventricles in the brain and spinal cord, rather than cells in the subventricular zone as biologists previously believed. Brain ventricles are hollow chambers filled with fluid that supports brain tissue, and a layer of ependymal cells lines these ventricles.

Knowing the cell source is crucial when developing stem cell-based therapies. Additionally, knowing that these normally dormant cells can be coaxed into dividing lays the groundwork for future therapies in which a patient’s own stem cells produce new brain cells to treat neurological disorders and injuries such as Parkinson’s disease, stroke or traumatic brain injury."