And so based on our electrophoresis setup we see that following ion exchange chromatography, when we extract that mixture and place it into this, well, we produce this distribution of bands. And because we decrease the number of bands we see, that means we remove some of those proteins. And so we are purifying our mixture. And so that should basically correspond to higher values in these two boxes. So let's calculate what the specific value is for step C. So we basically take the enzyme activity of that specific sample, right, and we divide it by the total protein because as always, specific activity is this divided by this. So this divided by this basically give us gives us.