Nanoscale materials and devices have yet to make their formal debut into the real-world marketplace, but the biomedical segment is beginning to show a great deal of interest (http:// tinyurl.com/r5pt4). A recent conference attracted presentations of the way nanoparticles could, for instance, detect and even destroy cancer cells. And one company is selling bandages infused with silver nanoparticles that speed healing in burn victims. (http:// tinyurl.com/hd4vp)