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[Effect of calcium ions on plasma membrane structure].

The structure of thymocyte's plasma membranes was studied as affected by calcium ions (0-1.126 mM). The fluorescence intensity of 1-anilinonaphthalene-8-sulphonate, the epimerization degree of pyrene and fluorescence anisotropy of membrane proteins were studied. The change of electrochemical properties of membranes, conformation of membrane proteins and lipid fluidity has been shown.