The method of anomalous viscosity time dependencies was used to investigated the influence of extremely low frequency alternating and static magnetic field on the genome conformational state of E. coli K12 AB1157 cells. The physical model was developed on the base of obtained results to describe effects of weak static and alternating magnetic fields on the living cells. In this model the high frequency of oscillations of a charged nucleoid are considered with a classical approach. The wave-like dependence of maximum effect on magnetic induction within the range from 0 to 110 microT was established.

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