Phenotypes of haptoglobin (Hp), group-specific proteins (Gc), transferrins and ceruloplasmin were studied by means of polyacrylamide gel disk electrophoresis of serum proteins in 411 tuberculosis patients and 283 apparently healthy individuals living in the North-West and Extreme North. Regardless of their ethnic affiliation, tuberculosis patients tend to accumulate Hp 2-2, Gc 1-1 carriers and Hp 2-2 + Gc 1-1 combinations. The persons with the above types of individual proteins usually have a serious clinical picture of the disease and lower activity of the immune T-system, as confirmed by different methods of multidimensional statistical analysis. Hp 2-2, Gc 1-1 carriers and Hp 2-2 and Gc 1-1 combinations among the Extreme North's healthy aboriginal population are more widespread than among the healthy inhabitants of the North-West.