[neverdem]

Tumours spark stem-cell review - Russian treatment linked to cancerous growths.

Donor-Derived Brain Tumor Following Neural Stem Cell Transplantation in an Ataxia Telangiectasia Patient

The last link is fairly technical. I suggest reading at least up to the "Editors' Summary."

[grey_whiskers]

When I saw that story, the only thing I could think of was this.

It also reminded me of a passage from the book When The Air Hits Your Brain by Frank Vertosik, MD (a neurosurgeon), which I cannot track down at the moment, in which he explained this kind of thing was likely due to the nature of fetal development.

Cheers!