Studies of cellular permeability in both animal and plant tissues have been carried on by a number of workers for the past fifty years. Most of these investigations have been undertaken in relation to specific problems in animal or plant physiology. It is only recently that the subject of cell permeability has become recognized as an independent and fairly well limited field in the general domain of physiology. The general literature on cellular permeability has recently been subjected to a thorough review by Gellhorn.1 The object of the present review is to sketch the main outlines of the results of these investigations in general, and to enumerate the applications that have been made of this field of study in relation to the physiology of the eye.
A variety of technics have been elaborated to test the permeability of cells and tissues. The first and most direct method consists
FRIEDENWALD JS. CELLULAR PERMEABILITY IN RELATION TO OPHTHALMOLOGY. Arch Ophthalmol. 1932;8(3):443–453. doi:10.1001/archopht.1932.00820160137011
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