We now understand a lot about cancer. We know that
it results from a series of genetic changes having to
do with cell division and growth control and genetic
instability, mor tality, the suicide mechanism in cells;
the ability of the cells to migrate; the ability of the cells
to attract to them a blood supply. And so that’s pretty
profound that in a few sentences one can summarize
a sophisticated, fundamental understanding of what
a cancer is.” LELAND HARTWELL