Specific Resistance of the Interior of the Red Blood Corpuscle


MEASUREMENTS of the electric impedance of suspensions of red corpuscles in serum, up to 16 × 106 cycles/sec., give for the specific resistance of the interior of the corpuscle (sheep, rabbit, chicken) 140 (± 10 per cent) ohms at 20° C. This value is about twice that of the serum. The value is lower than that previously derived1 from measurements up to 4.5 × 106 cycles/sec., the difference being due to the inaccuracy of the extrapolation from these comparatively low frequencies. The low value of the resistance of the interior of the corpuscle as compared with that of the serum is chiefly accounted for by the non-conducting bulk of the hæmoglobin.

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  1. 1

    H. Fricke and S. Morse, J. Gen. Physiol., 9, 153; 1925.

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