Here's another article demonstrating the potential of nanotechnology:

coloCan

"Nanosponge drug delivery system more effective than direct injection.", allegedly 3 to 5 times more effective at reducing tumor growth than direct injecting of
same drug........Of course all of this is still experimental(remember that movie "Fantastic Voyage"?)

nanowerk.com (rather technical but all about nano research,tho not only in the medical field)

steve