[The function of lymphocyte populations based on aberrations in the lactate dehydrogenase isoenzyme spectra in systemic lupus erythematosus and rheumatoid arthritis].

The data were obtained on the presence of considerable aberrations of the isoenzymic spectrum of lactate dehydrogenase in different lymphocyte populations and subpopulations. The isoenzymic shifts reflect the changes occurring in the metabolic status of the cells and are sensitive tests detecting functional deficiency of lymphocytes.