Sorry if I gave the impression I was responding to your post specifically. It just happened to be the next in line.

The idea of directed or targeted drug delivery is very hot right now. We have an entire nanotechnology group looking at both treatment and detection, everything from infectious agents to cancerous cells. Although, I will reserve judgment for now as to their ultimate use or usefulness in clinical applications. I can remember when immuno-modulators like interleukins were going to be the magic bullet-cure all and while it is true, many have been useful; they still have their limitations.

Pete