[Complex evaluation of the cytogenetic activity of plant growth regulators in different test systems]. / Kompleksnaia otsenka tsitogeneticheskoi aktivnosti nekotorykh reguliatorov rosta rastenii v razlichnykh test-sistemakh.

The cytogenetic activity of plant growth regulators is investigated in three different test systems. It is shown that three substances (hydrel, dihydrel, camposan) induce no chromosome breaks. MAH-I (maleic acid hydrazide monosodium salt) increases the mutagenic activity in all three investigated test-systems (in somatic and generative cells of rats and in the culture of human lymphocytes). The recrystallized MAH (II) and alar demonstrate an increase in the level of chromosome aberrations in the culture of human lymphocytes and in the bone marrow of rats.

[Ultracytochemical changes in the brain and liver in exposure to low-intensity nonionizing microwave radiation]. / Ul'tratsitokhimicheskie izmeneniia v golovnom mozge i pecheni pri deistvii neioniziruiushchikh mikrovolnovykh izluchenii maloi intensivnosti.

The morphological (including electron microscopy, histochemistry, morphometry) and biochemical methods were used in experiments on 478 white rats to determine the content of glycogen, tigroid substance, RNA, DNA and activity of the enzymes (SDH, MDH, LDH, G-6-PDH, phosphorylase) in intact animals after and during exposure to nonionizing microwave radiation (NMR), 30 and 60 days after the rehabilitation period, as well as after physiological exposures (hypoxia and NMR of higher intensity). It was disclosed that repeated exposure to little doses of NMR alters the structural and functional bases of the mechanisms that regulate cell metabolism, produces conformational changes in the chemical substances and thus exerts a damaging action on the delicate cell structures; redistributes the action on the pathways of energy formation at the expense of compensatory protein synthesis and the increase enzymatic systems; increases the resistance to hypoxia and action of NMR of higher intensities.