[nine_k]

Yes, this is a given. I mean that replacing neurons may require a specific knowledge of this machine, and procedures unique to it.

If I were to create such a machine, I'd make the whole top part replaceable, with the bottom part electronic-only. When your neuron culture runs its course, you detach the top part and ship it back to the maker, and buy a new one, with a fresh culture, at a discount. They recycle the top parts by cleaning them and re-populating them with new neurons. The sourcing liability is on them, as is quality control.

[throwanem]

Oh, I see what you mean. Something like a packaged eluter for short-lived medical isotopes, sure, that makes sense.