The Coulter principle states that ____ pulled through an ____ , concurrent with an electric current, produce a change in ____ that is proportional to the ____ of the thing that traversing the device

Texas Red Dextran was chosen as the reference tracer and Sodium Fluorescein as the diffusible tracer. They were chosen based on their ____. ______ has a ____smaller than the pore size of the membrane and has a ____ larger than the membrane pore size.