Decelphalized monoclonal humans.

Turn off neural tube development genes so they never develop brains. Grow them in test tubes, then hook them up to life support.

They can never be conscious beings, so you can do anything with them. They're essentially large-scale tissue cultures.

You can harvest them for blood and organs, create knockout lines for different studies, and speed drug development and verification tenfold. Population studies on everything imaginable becomes tractable.

We have to get out of the biological stone age and develop real automation primitives. We don't have a real test kit. Decephalized monoclonal humans is the reverse salient we need.

I hope someone does this. If nobody does it and I wind up becoming a billionaire, I'll do it. It needs to be done.