We wrote about the amazing cancer-proof mice a couple of months ago. Now there is speculation that these mice might eventually lead us to finding a way to make cancer-proof people. In fact, they may already be among us -- sort of. The same white blood cells that zap cancer in the amazing mouse may be present in some human beings -- accounting for why some people get cancer and others don't. This could also explain why some people manage to get their cancer into remission and recover much better than others.