[Effect of a magnetic field on chromosome set and cell division].

An effect of stable magnetic field on karyotype and cell division of human lymphocytes from peripheral blood was studied in tissue culture. Comparative investigations were carried out with lymphocytes, which were treated with magnetic field of different tension (0,179; 0,391 and 0,600 Ts) and continuance (30 sec, 30 and 60 min). Lymphocytes, treated with stable magnetic field, were suspended in donor plasma and immediately cultivated after the treatment. The stable magnetic field was found to have a distinct mutagenic effect on cultivated lymphocytes of human peripheral blood. The increase in structural impairements of chromosomes correlated with tension of magnetic field and continuance of its effect. In structural impairements of chromosomes the chromatid gaps and breaks were more often observed but chromosome ruptures and pericentric clearances occurred more rarely. The effect of stable magnetic field on lymphocytes proliferation was studied. Under weak and transient using of magnetic field the proliferation was stimulated, but in rigid conditions - mitosis and blastic transformation were decreased. Continuous effect of magnetic field with weak tension did not inhibite the blastic transformation but influenced on the survival rate of cells in tissue culture, enhancing their lethality.