Cancer: The stem cells that make cancer run riot. Kill them and you could destroy the disease...

'They're cancer stem cells,' he says. 'Not everyone in medicine believes in them yet, but look - there they are.' Even to the untrained eye, it's clear there are two distinct types of cell; one that groups together a little like frogspawn, and another that looks like a slug.

http://www.dailymail.co.uk/health/article-2235422/Cancer-The-stem-cells-make-cancer-run-riot-Kill-destroy-disease-.html?ITO=1490&ns_mchannel=rss&ns_campaign=1490