Efficient tumor formation by single human melanoma cells

From the Wired Science article:

“We’re not trying to claim there is no merit to the field, but we think that the frequency of cancer stem cells will be much higher,” said Sean Morrison, director of the Center for Stem Cell Biology at the U-M Life Sciences Institute and coauthor of the study in Nature Thursday. “And there will be some cancers like melanoma where lots of cells will be tumorigenic and it won’t be possible to treat those cancers by treating a small subset of cells.”