[Effect of weak combined static and low-frequency alternating magnetic fields on the Ehrlich ascites carcinoma in mice].

The parameters of the low-frequency (1, 4.4, 16.5 Hz or the sum of these frequencies) extremely weak (300, 100, 150-300 nT, according to frequencies) alternating component of combined magnetic fields have been found, which in combination with a weak collinear static constant field of 42 nT (the induction corresponds to the range of the geomagnetic field) has a marked antitumor activity. The exposure to these magnetic fields inhibits the tumor growth in mice with the intraperitoneally transplanted Ehrlich ascites carcinoma. The effect manifests itself in an increase in the life of tumor-bearing animals and in the content of damaged tumor cells. It was found that the death of tumor cells by the action of weak fields occurs predominantly by the mechanism of necrosis.