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  • Title: Experimental study of relationship between biological hazards of low-dose radiofrequency exposure and energy flow density in Spirostomum ambiguum infusoria exposed at a mobile connection frequency (1 GHz).
    Author: Sarapultseva EI, Igolkina JV.
    Journal: Bull Exp Biol Med; 2011 Aug; 151(4):477-80. PubMed ID: 22448371.
    Abstract:
    Radiofrequency exposure at the mobile connection frequency (1 GHz) at different energy flow densities, 5 μW/cm(2)(2-fold below the maximum permissible level) and 50 μW/cm(2)(5-fold surpassing this level), caused a reduction of motor activity in unicellular hydrobionts Spirostomum ambiguum Ehrbg infusoria. In all cases, the effect was similar by the intensity and developed in a jump-wise manner after exposure of a certain duration, after which did not increase with prolongation of the exposure. The duration of radiofrequency exposure safe for the object varied significantly: 8-9 h and 10 min at 5 and 50 μW, respectively. These innovation data on harmful biological effects of very low radiofrequency exposure (5 μW/cm(2)), the threshold form of biological reaction, presence of "safe" periods of exposure, and the data demonstrating a clear-cut relationship between these periods and energy flow density are interesting from theoretical viewpoint and in connection with the problem of evaluating permissible levels of radiofrequency exposure of biological objects.
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