Cows have an immune system, labs don't. That's a pretty big problem with lab-grown meat. Bacteria are much better at reproducing quickly than cells of complex

Cows have an immune system, labs don't. That's a pretty big problem with lab-grown meat. Bacteria are much better at reproducing quickly than cells of complex organisms like animals. So if your reactor is not perfectly clean, you are going to grow bacteria instead of meat. The reason live animals (including us) don't get overwhelmed by bacteria is because they have all sorts of defenses, most importantly, an immune system. Unless labs have something equivalent in, they will have to be under extreme scrutiny.