DNA Nanobots

The process of building DNA nanobots starts on a microfluidic chip.
Decades of research have allowed researchers to optimize DNA assembly outside the body. With the help of catalysts, which help “bind” individual molecules together, the team found that they could easily alter the shape of the self-assembling DNA bots—which formed fiber-like shapes—by changing the structure of the microfluidic chambers.

https://singularityhub.com/2019/04/24/new-lifelike-biomaterial-self-reproduces-and-has-a-metabolism/