Actually, another approach to this is to activate the particles is by way of low-level and non-invasive radio frequency energy.

This man was the one that started a lot of the research into this kind of stuff: http://en.wikipedia.org/wiki/John_Kanzius

As a cancer survivor myself, and somebody that has undergone Chemo, I am very intrigued and hopeful about this type of research. Lets hope it all pans out as we all hope.