[tonyedgecombe]

It probably wouldn't look much different from a modern poultry farm.

[adrianN]

Minus the brains, so no suffering. Hopefully also more energy efficient.

[rsynnott]

I would imagine more similar to a modern pharmaceutical factory (which is much, much cleaner than a poultry farm).

[jacobush]

How? I imagine sterile enourmous vats and tubes in a continuous process, like a brewery.