[Hygienic evaluation of oxygen produced in a system using solid polymer electrolytes].

It has been shown that gaseous oxygen produced in a system containing a solid polymer electrolyte from distilled water and two water samples containing different concentrations of chemicals meets on the whole USSR Standard 5583-78 and iso standard 2046. This oxygen underwent toxic evaluations on 60 white noninbred male rats. When mixed with gaseous nitrogen (1:4), electrolytically produced oxygen exerted no unfavorable effects on the animals.

[Effect of insulin on RNA biosynthesis in the chromatin fractions of the liver of rats of different age].

Experiments were conducted on rats; a study was made of the age changes of insulin action on the genetic apparatus of hepatocytes. Adult (6-8-month-old) rats showed the greatest elevation of transcribing capacity of the repressed chromatin fraction 2 hours after the hormone administration, no changes occurred in the active chromatin fraction. The maximum increase of the labeled precursor inclusion in old (24--26-month-old) rats was seen 3 hours after insulin injection both in repressed and active chromatin.