The American scientist James Baker of the University of Michigan has made a huge step in this direction. Thanks to his longstanding research he has developed nanoparticles that are “taught” to target drugs directly to cancer cells. They pass through the different barriers, such as the walls of blood vessels. Once they find diseased cells, the particles literally swallow them. To make diagnosis easier, Baker had them painted with fluorescent paint so they are visible in MRI. If this method is applied, many of the healthy cells, which are now destroyed along with cancer cells by the familiar drugs, will remain intact.