[The ultrastructural and dynamic characteristics of erythrocyte membranes. The effect of the physiological status and temperature].

Erythrocyte membranes of ground squirrels taken from hibernating, awakening and active animals with the body temperatures of 4, 30 and 36 degrees C, respectively, have been shown by freeze-fracture technique to differ in morphology of the PF surface, density and distribution patterns of intramembrane particles. The ultrastructural changes in membrane caused by temperature were confirmed by the data on alterations of dynamics parameters of the lipid bilayer and spectral characteristics of membrane proteins.