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Conductance of the cytoplasm of erythrocytes as a criterion for evaluating the quality of blood preservation.

It has been established that enzymic systems become exhausted during the preservation of blood, which causes disturbances in the transport of ions across the cell membrane. These changes occurring in the cell may be recorded by measuring the electrical conductance of cytoplasm. The conductance has been determined for three selected preserving liquids in relation to the blood storage time. Results of this study showed that the dynamics of changes in the electrical conductance of the cytoplasm is characteristic for a given type of the preserving liquid. Hence, the determination of changes in the electrical conductance of the cytoplasm may provide a new important criterion for evaluating various methods of blood preservation.