[The evaluation of the sizes of erythrocytes of the hibernating ground squirrel Citellus undulatus Pallas].

A topographical image of individual erythrocytes of the ground squirrel Citellus undulatus Pallas, in unfixed unstained smears was first obtained by scanning probe microscopy for two states of the animal: hibernation and the active state. The scannig of single discocytes, i.e.

[The Van't Hoff rule in studying various phases of hibernation of the squirrel Citellus undulatus Pallas. Physico-chemical route to cold adaptation].

Taking into account the van't Hoff's law the rates of relative erythrocyte hemolysis in ground squirrel Citellus undulatus Pallas during different phases of hibernation were first studied by the method of acid erythrograms with some modifications. The temperature of the erythrogram registration (8 degrees C) models the body temperature in hibernation, and temperature of 35 degrees C, corresponds to the body temperature of the awakened ground squirrel. The positions of the erythrogram maxima for the ground squirrel during short-term arousal and during hibernation coincide for each temperature studied: 8 or 35 degrees C.

[Electrophoretic mobility of UV-irradiated bacterial cells].

Electrophoretic mobility of Escherichia coli cells exposed to various doses of UV-radiation was investigated. The method of free flow electrophoresis was used to study a correlation between membrane protein charge and cell surface electric charge. The change in the cell surface charge and electrophoretic motility was associated with the damage to membrane proteins and the survival of UV-irradiated bacteria.