Changes of Specific Conductivity of Blood Serum in vivo after X-irradiation


DURING the investigation of biological changes in the serum of irradiated animals the specific conductivity of rabbit serum after X-irradiation was followed. Twenty animals (Viennese White) were used for the experiment. They were divided into four groups of five animals each. The irradiation was carried out with doses of 250, 500, 1,000 and 1,500 r., using a ‘Macrophos 250’ apparatus. The conditions of irradiation were as follows: E, 215 kV; I, 15 m.amp; flow of doses, 8 r./min; half-layer, 1.6 mm Cu. 2.5 ml. of blood were taken from the ear vein 30 min before irradiation (control data) and 4 h post-irradiation. The blood serum was obtained by centrifuging the blood at 3,000 r.p.m. for 15 min. The serum resistance was measured with a ‘Konduktoskop III’ apparatus, its Wheat-stone bridge supplied by stream flow of 5,000 c/s. Serum was heated to 20° ± 0.05° C and measured in the conductive vessel with platinum electrodes coated with platinum-black. The resistance capacity of the conductivity-vessel, C = 235.73 cm−1.

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  1. 1

    Hlavattý, V., and Žák, M., Sborník lék., 66, 4, 111 (1964).

  2. 2

    Hlavatý, V., Jirounek, P., and Žák, M., Sbornik lék. (in the press).

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HLAVATÝ, V., ŽÁK, M. & JIROUNEK, P. Changes of Specific Conductivity of Blood Serum in vivo after X-irradiation. Nature 206, 1057–1058 (1965).

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