The mostcommontypeofbrain cancer-glioblastoma-is marked by the presenceofthesestem-cell-like braincells, which, insteadof triggering the replacement of damaged cells, formcancer tissue.
However, he said that embryonic stem cells remained the most obvious source of cells for such transplants, as foetal tissue - used in some experiments - was scarce, and so-called "adult stem cells" had never been converted into the right type of brain cells, despite 15 years of research.