There’s also some ethical breathing room for experimentation afforded by bioengineered human tissue (once you get beyond the ethical concerns that arise in producing it in the first place). A bunch of cells that behave as they would in the organism yield more accurate results, and printing makes them easily reproducible. It’s a perfect playground for expanding experimentation frontiers.
The focus of much of this research is the eventual production of tailored tissues suitable for surgery, like living Band-Aids, which could be printed in layers on the inkjet. (There are organs being bioprinted in other research labs—stay tuned for more illustrated inquiry into this process.)