Most living cells contain a large amount of water. To improve our understanding of this fundamental phenomenon of cell physiology, five theories are critically examined in the light of three sets of relevant experimental findings. These findings are: (1) the diversity and specificity of the percentage water content to tissue type; (2) the limitation imposed by the Law of the Conservation of Ene...

The fluorescence of the dye CC-6 [(3-hexyl-2-(3-hexyl-2-benzoxazolinylidene)-1-propenyl)-benzoxazolium iodide] has been shown to indicate Donnan potentials in rabbit skeletal muscle myofibrils. These results are in agreement with previously published work in which the potentials were measured with microelectrodes on glycerol-extraced muscle fibers. The magnitude of the Donnan potential of the m...

Dear Sir: Gary-Bobo and Solomon (1968, 1971) have employed Gibbs-Donnan equilibrium studies in the assessment o f the anomalous osmotic behavior o f the red cell. In these studies, the interpretation was based on thermodynamic equations for ideal solutions. During the course of recent investigations, we have found that it is necessary to consider the nonideal aspects o f concentrated hemoglobin...

Membrane potentials of polysulfonated cation exchange membranes (unsupported polysulfone, SA3S and polyester supported polysulfone, SA3T) for KCl, NaCl and LiCl solutions using Ag/AgCl electrodes were measured. The measurements were carried out for, KCl SA3S or SA3T MCL, (M: K, Na and Li) systems. The concentration of salt (KCl) was kept constant in one side of the cell, C1, at 1.10 M was chang...