We multiply that ratio by 100 and we get 35%. And this is a high enough yield. So 35% is enough to basically mean we can work with that extracted sample, the protein, to basically study that protein in different ways. So these are the five quantities that we have to calculate every time we carry out one of these procedures. And then we also normally expose our extracted portion to SDS page to basically help us visualize if our technique is actually working. And if we combine these two methods, that gives us a very good idea if the purification technique is working.