[Protective action of serum RNA-ase in viral infections]

The enzymatic preparations of the RNA-ases from the cells of a continuous line of the sucking pig kidney culture, the blood serum of chicks, and the blood serum of rabbits were isolated and purified. The antiviral action of these enzymes on the homologous culture, chick embryos in infection with the RNA-genom virus of the Newcastle's disease and on rabbits infected with the DNA-genom virus of the Aujeszky's disease was demonstrated. A supposed mechanism of the protective action of "own" RNA-ases is discussed in this work.