It's included on "Release Therapy, " which won him a Grammy last night.

NPR: 'Nice' Reward: Five Grammies for Dixie Chicks

And they had a lot to do with this album, "Release Therapy, " if you listen to it, and why I wrote certain songs that I did and some of the things that I said.

NPR: 'Nice' Reward: Five Grammies for Dixie Chicks

Now, if you had a combination therapy with nanoparticles, the drugs would slowly release into the tumor cells and you would have high, sustained levels of drug in the tumor.

FORBES: Nano Takes Aim At Cancer Cells