[Possible mechanisms of the effect of the external electrostatic field on the electric conductivity of DNA].

Action of the external electrostatic field on electrophysical features of DNA dry fibres was studied. It is shown that an increase of DNA electric conductivity begins from some threshold voltage mean of the external field. On the basis of the suggested DNA semiconductive properties it was concluded that the observed effect was the consequence of Frenkel's thermoelectronic ionisation.