A small percentage of cells within an established tumor have the properties of stem cells. These solid tumor stem cells give rise both to more tumor stem cells and to the majority of cells in the tumor that have lost the capacity for extensive proliferation and the ability to give rise to new tumors....http://www.google.fr/patents/US20060073125?utm_source=gb-gplus-shareBrevet US20060073125 - Isolation and use of solid tumor stem cells
