Question: If nanotechnology was to go inside the human body for medicinal purposes, how would it be masked so that the immune system wouldn't destroy it?

There are lots of things that enter your body that your immune system doesn’t respond to. If it responded to absolutely everything, it would be difficult to live! You may know people who have allergies to harmless things like pollen or peanuts. This is because their immune system is over-reacting to these certain particles – imagine what their lives would be like if their body reacted to everything!

So, many nanoparticles can enter our bodies undetected and are therefore able to administer medicines without being destroyed. There is some very successful research currently looking into gold nanoparticles as a way to administer cancer treatments – https://www.auntminnie.com/index.aspx?sec=ser&sub=def&pag=dis&ItemID=102411