And following salting out, we extract that protein mixture and we essentially apply the process of dialysis to remove those salts that we don't actually want inside our mixture. And once we have that extraction, we place it into the second well in the SDS Page apparatus. And this is procedure B. So notice that this distribution of bands consists of less bands than before. And what that basically tells us is, as we go from A to B, we decrease the number of proteins inside that mixture that we actually don't want. And so that means it's a good thing, because what that means is we're purifying our protein mixture.