And so what happens is after some time passes, this will migrate less than the smaller green protein. And so we're going to form two bands. One of the band, the green band, corresponds to this protein and the second band corresponds to this larger polypeptide chain. So once we form these two bands, we can now isolate these two proteins. So we take out this protein, place them into beaker one. We take out the second protein, the second polypeptide chain, and place it into beaker number two.