1977 年 97 巻 11 号 p. 1201-1206
The epithelium capsule was regarded as a composed membrane composed of a negatively charged and positively charged membranes in order to determine the charge density θ*e of this epithelium layer which was found to be -0.0101 mol/l in NaCl solution and -0.0120 mol/l in KCl solution.