MIT Team Creates Cancer Stem Cells
There are multiple advantages of using cancer cells in research. Stem cells are generally hard to come by. Cancerous versions of the cells tend to be tougher and grow much more rapidly enabling cell cultures to be easily shared among scientists. Normal cells tend to stop growing after they reach a certain density and form only a thing layer on a Petri dish. Cancer cells exhibit no such inhibitions. The first mammalian cells that could be cultured indefinitely were the HeLa which were cancerous. http://en.wikipedia.org/wiki/HeLa I would imagine that these cancerous stem cells would greatly aid stem cell research.