Abstract
The electric resistance of agglomerated erythrocytes is caused by 2 components. One part of the resistance depends on the conductibility of the suspension medium and is attributable to the capillary interstices which depend on the hydration degree on the surface of the erythrocytes. The other component is a constant resistance which is only influenced by changes in the membrane. Therefore this resistance can be considered as a resistance of the surface of the erythrocytes. So it is possible that in measuring the resistance of agglomerated erythrocytes one can estimate the smallest interstices as well as the hydratation of the surfaces.