HomeTumorigenic heterogeneity in cancer stem cells evolved from long-term cultures of telomerase-immortalized human mesenchymal stem cells September 19, 2013 print this article Tumorigenic heterogeneity in cancer stem cells evolved from long-term cultures of telomerase-immortalized human mesenchymal stem cells Burns et al.; Cancer Res. 2005 Apr 15;65(8):3126-35