We have our acetylcholine bound to the protein channel, and we have the enzyme acetylcholine estherase that bind onto this acetylcholine. And it breaks it down, it divides it. It hydrolyzes aracetal choline into an acetate molecule and into a choline molecule. So we have an acetate, we have the choline. And once we break them down, we inactivate that neurotransmitter. And these two molecules, our choline and acetate, are shuttled.