• Some day a fleet of nanomedicines and devices will travel anywhere it needs to go in the body, under its own power, using biocompatible motors and fuels to get there.
  • Before that day arrives, however, researchers must learn how to design these compounds so that they can move without damaging or interfering with any normal biological functions.
  • In the near term, scientists are generating magnetic fields and ultrasound waves to propel nanoparticles to their target areas. But such approaches cannot penetrate deep into the body.
  • Nanobots made of DNA are another alternative. Some of these compounds are designed to work like boxes that open and release their cargo only under specific circumstances.


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