Permeability of cellophane membranes to parotid proteins during dialysis

Summary Pooled parotid saliva was dialyzed in cellophane membranes against water for periods of up to 1 week and loss of proteins was monitored by acrylamide gel-electrophoresis. A gradual loss of cationic proteins was observed whereas anionic proteins were not appreciably affected. Loss of the cationic proteins could be greatly reduced by performing dialyses against dilute electrolyte solutions rather than water. These effects were attributed primarily to electrostatic charges associated with the dialysis membranes.The assistance of Mr E. Pederson and Dr G. Clark is gratefully acknowledged. Supported by Naval Medical Research and Development Command Project MR005.19 6048, Bethesda, Maryland. The opinions expressed herein are those of the authors and are not be construed as reflecting the views of the Navy Department or the Naval Service at large. The use of commercially available products does not imply endorsement of these products or preference to other similar products on the market.Deceased.