Analysis of the Biological Activity of Two-Frequency Magnetic Signals and Single-Frequency Variable Components during Exposure to Weak and Extremely Weak Combined Constant and Low-Frequency Variable Magnetic Fields on the Growth of Grafted Tumors in

摘要

Mice with the ascites form of Ehrlich carcinoma were used to study the dependence of the aniitumor activity on the modulation and carrier frequencies during exposure to weak and extremely weak combined collinear magnetic fields (a constant field of 42 u.T and a low-frequency variable magnetic field with an amplitude of 0.08 uT). It was found that, at different carrier frequencies of 4.63 Hz (from the range of cyclotron frequencies of ionic forms of amino acids) and 16.5 Hz (the cyclotron frequency of the potassium ion), the ranges of efficient modulation frequencies partially overlap and are 0.2-0.5 and 0.25-0.7 Hz, respectively. Slep-by-step scanning of carrier frequencies within the ranges 4.16-5.24 and 15.5-17.5 Hz at fixed modulation frequencies showed thai each of the ranges contains several efficient carrier frequencies. Experiments on exposure to isolated frequencies showed that the biological activity of the single-frequency variable component is much lower than that of the two-frequency magnetic signals.