[The protein composition of the blood plasma of cosmonauts after prolonged orbital flights].

The method of two-dimensional electrophoresis was used to determine the protein composition of blood plasma in the cosmonauts stayed on board Mir station over 166 and 366 days. Separation pattern of plasma protein observed next day after landing had several typical differences from the standard pattern of plasmatic proteins found during a preflight examination and on the 7th postflight day. The changes were an increase in intensity of specific protein spots as well as in occurrence of unusual protein spots.