Now, what will begin to happen? Well, what will begin to happen is the proteins will begin to migrate, they will begin to move. Why? Well, because the proteins will have a net charge. And whenever they have a net charge, they will move within an electric field as a result of the interaction between the electric field and the charge, the net charge on that protein. So, for instance, if we take a protein that contains a net positive charge and we place it into our field, it will begin to move towards the negative end.