To quote from cNs literature: "Many grand challenges of addressing cancer, from detecting a few early malignant cells among billions of healthy cells, to delivering potent drugs to late-stage tumors without harming other tissue, require new approaches that target the miniscule components of cells-- DNA, RNA, proteins-- and their chemical signals and pathways. Nanotechnology, the development and engineering of devices so small that they are measured on a molecular scale, is on the brink of enabling such approaches."
Godspeed.