We can add another type of salt, for example, ammonium sulfate, as we'll see in just a moment. So as soon as we begin to add our salt, what will begin to happen is the solubility of that protein in the water will begin to decrease. And not only that, if we continue adding more salt, eventually we're going to reach a certain specific concentration of salt. And in that value, what happens is that protein will become insoluble in that solution. And that means the protein will begin to precipitate out of the solution. It will crystallize and form the solid state.