The new robot can operate in the human body.

"These tiny robots use magnetism to move and explore tight spaces, potentially including disaster rubble or the human body. Credit: Jennifer M. McCann/Penn State" (ScitechDaily, "

This new robot is like straight from the Sci-Fi movie. Its purpose is to swim inside the body. And that robot can deliver medicine precisely into the wanted position. That kind of technology is a groundbreaking system. It can do many things that regular surgeons cannot do. The system can inject things like DNA bites that order tumors to die into the targeted cancer cells. The nanorobot can also give gene therapy. 

It can transport the wanted genome into the right cell groups. Or the system can carry stem cells to the right points. That thing can make it possible to give a treatment for damaged tissues. That doesn't revert well. . Stem cell therapy can help to fix brain damage. But those stem cells must be put into the right points. And that new miniature submarine can make that dream true. This submarine has many applications where it can operate. 

Another thing that this robot can do is to close blood vessels that transport blood into the tumor. This kind of system can also inject things like thin kevlar fibers into the cells that doctors want to destroy. That makes it possible to use the new types of medicals. The robot that can travel in the body and take even photographs of objects can search for things like tumors and blocks in blood vessels. Those nano-submarines can also transport tissues to fix damages into the blood vessels. 

The robot that swims in the blood and searches for non-wanted things are tools that humans never had before. Those systems are the next-generation tools. Whose purpose is to deliver medicines to the right points. These kinds of tools are also very dangerous in the wrong hands. This type of nanotechnology is the so-called perfect assassination weapon. That means the military might want to use those submarines as roles that belonged to bullets. 

 https://scitechdaily.com/not-science-fiction-this-tiny-robot-crawls-through-your-body-to-deliver-medicine/