[Hygienic standardization of the levels of selenium hexafluoride in the air of a working area]. / Gigienicheskoe normirovanie geksaftorida selena v vozdukhe rabochei zony.

The paper presents the results of investigations on the hygienic standardization of the levels of selenium hexafluoride (SeF6) in the air of a working area. It also analyzes the data on the effects of SeF6 inhalation on laboratory animals, by applying morphological, physiological, hematological, and biochemical studies. The studies have yielded the basic parameters of inhalation toxicity and established the threshold of the irritant action of the substance, developed and approved its maximally acceptable concentration (0.2 mg/m3, gas + vapors) and a procedure for photometric determination of SeF6 in the air of a working area.

[Phospholipid composition of tumors and homologous tissues of rats exposed to dimethylnitrosamine]. / Fosfolipidnyi sostav opukholei i gomologichnykh tkanei krys pri vozdeistvii nitrozodimetilamina.

Quantitative changes in phospholipid spectra of blood serum, liver, kidneys and tumour tissues were determined at different stages of carcinogenesis induced by nitrosodimethylamine in rats. It was established that tissue of kidney tumours differs from homologous tissue only in the total amount of phospholipids as well as of cardiolipin phosphatidylethanolamine, phosphatidylserine and sphingomyelin. Essential changes were revealed in the phospholipid spectrum of blood serum and liver of tumour-bearing rats. The inverse correlation was found in phosphatidylethanolamine and phosphatidylserine amount in these tissues.