Dependency of red blood cell passage time on pore geometry in the single-pore erythrocyte rigidometer (SER).

Employing the "Singlepore Erythrocyte Rigidometer" (SER) in which small pore diameters were used, significant differences were measured between red blood cells from adjuvant arthritic rats compared to control from non-diseased animals. The results changed to opposite values using higher pore diameters, which may be due to differences in cell "rigidity" and MCV.