Everything has to be perfectly sterile anyway, this is cell culture. Open tops STRs are not exactly a thing. It doesn’t have to be pharma grade, sure, but food safety is a thing and you’re not going to get a process certified without it. Main issue remains to be the cost of medium, serum-free or not.

I do wonder where you got that idea from, though. I don’t intend to be rude, but have you got any kind of experience in the field?

Why would I need an immune system in CM? This is food. It’s cells, generally on a scaffold, that look like either ground meat or a steak or whatever you want. If you mean vasculature: That is an issue if you want to print organs or large, intact tissue, less so for foodstuffs.

Cultured Meat. Without relying on any major breakthroughs, a price competitive with “traditional” meat is feasible with a few rather reasonable and conservative assumptions and developments. Dropping cows as meat source globally alone might be sufficient to slow down further climate change significantly.

I appreciate your rambling, but I think you might appreciate some time off of the internet.