Brain nerve stem cells against brain tumour?
 

Past animal studies had shown that inserting nerve stem cells into the brain caused these cells to move towards damaged areas of the brain even when inserted in remote areas.
In this new study it appears these stem cells may seek & fight brain tumours.
Still far from clinical applications but a hopefull new track:
http://www.sciencedaily.com/releases...0116132701.htm
Brain Stem Cells Against Cancer?