But this requires three times this concentration, so 2.4 molar. And because we have such a drastic difference between their solubilities and their salt concentration values, we can basically apply this salting out procedure to isolate this protein out of our mixture. So before we add the salt, we pretty much have this situation as described here. We have these fibrinogens shown in green and the serum albumin shown in purple, that are basically existing as individual entities. But as we begin to add that salt, and as we add 0.8 molar of ammonium sulfate, the green fibrinogen begins to aggregate because that stabilizes that structure. And so this begins to precipitate and crystallize.