Growing tiny tumours in the lab could help treat cancer

Giving up their secrets ALMOST half a century after Richard Nixon declared war on cancer, there has been plenty of progress. But there is still no cure. One reason is that "cancer" is an umbrella term that covers many different diseases. Although the fundamental mechanism is always the same--the uncontrolled proliferation of cells--the details vary enormously. Leukaemia is not the same as colon cancer. Even within a particular type of cancer, one patient's disease will differ from another's. Dif...