Doctors have always dreamed of giving medicines to specific parts of the patient's body, and they soon discover that there is a smarter way to achieve this dream - fish.
Researchers at the University of California, San Diego have developed a nanoscale metal fish (the fish is only 800 nanometers in length) that can carry drugs deeper into the human blood system. Each monster has a gold head and tail, a nickel body, and a corresponding silver link. You just need to put them in a turbulent magnetic field and they can swim – no propellers or passive transport systems. In that case, the drug carrier can be made smaller and move faster.
The technology certainly has its flaws. Currently, these carriers are not yet biodegradable. Therefore, a large group of fish may be stuck in your body unless there is a way to flush them out. Gold and silver are also not cheap metals. Scientists are really working on biodegradable issues, and it's quite possible that these groups are not just guiding drugs. For example, you can use them to control individual cells or do some form of non-invasive surgery. An important issue before we actually target the drug to where it is needed is to optimize the technology.
The following video introduces how Nano Fish works:
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