And another protein is serum albumin. And this is a protein that carries lipids, for example, fatty acids and cholesterol inside our blood plasma. Now, for fibrinogen, which is shown in green, this protein requires a concentration of 0.8 molar of ammonium sulfate to basically precipitate. 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.