So, because those large proteins will have a smaller velocity, smaller rate of movement, as a result of the increase in the drag force in the coefficient, what that means is these green proteins will be found higher up as compared to our intermediate orange proteins, which will be somewhere in the middle. And those very tiny proteins, the purple ones, will find it easier to move along these channels and pores because of its physical size, because of that smaller drag force. And so, over time, we basically see three different bands form. At the top, we have the green band. Somewhere in the middle, or somewhere on the bottom, we have this purple band. And somewhere in the middle, we have our orange band.