Source (ScientificAmerican.com): Smart Cancer Targeting
"Smart" anticancer drug systems can use mechanisms similar to swarm intelligence to locate sites of disease in the human body.
Geoffrey von Maltzahn and coworkers may have come up with the most ingenious solution yet. They have created "scouting" or Signaling nanoparticles that pave the way to the location of a tumor inside a living mouse, and then communicate the tumor location to Receiving nanoparticles, or the rest of the "swarm."
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