Tiny metal hands might be floating arround in your blood in the future...

http://www.jhu.edu/~news_info/news/h...9/gracias.html

Mmm...cells...

All seriousness aside, this article made me think about the Magic school bus cartoon we used to watch in school.

Hehe, I loved that show.

What's funny is that I wanted to call these nanotechnology, but really they aren't. I'm sure that they'll find a way to scale it, though.