Medical nano worms

Have you heard the latest? Scientist has developed this little robots smaller than the thickness of human hair. It's crazy they're so small that they can put them on a needle inject them into your bloodstream and their little brains are taught to track down any cancerous cells in your body. The little robots are coated with iron oxide particles when they find the cancerous cells. They attach themselves to it by having the iron oxide on the nanobots. The person goes into an x-ray, the iron oxide particles show up brightly under x-ray so doctors can see cancerous areas at an early stage. So the earlier they catch your cancer the better chances you have for survival.