[Respiration activity of frozen-thawed lymphoid cells]

The respiration and oxidative phosphorylation rate of lymphocytes were studied after their cryopreservation. The oxygen uptake of cells frozen in the freezing medium containing 20% serum and 10% PEO-400 or DMSO is higher than that of the native lymphocytes. 2,4-DNP has not demonstrated any stimulating effect on the frozen-thawed cell respiration. Succinate has significantly stimulated the respiration of cells frozen with PEO-400 and produces a slight stimulating effect on the respiration of cells frozen with DMSO. It is concluded that the mitochondria and plasma membranes of cryopreserved lymphocytes undergo considerable changes.