[Epidemiological peculiarities of working day losses among military personnel of Ukrainian Armed Forces].

Peculiarities of working day losses caused by infectious and parasite diseases among military personnel of Ukrainian Armed Forces in the period of formation, reorganization, reformation and restructuring of the Armed Forces of Ukraine in 1991-2008 are defined in the article based on retrospective epidemiological analysis.

[The place of endovideosurgical interventions in treatment of inguinal hernias].

Endovideosurgical hernioplasty was performed in 3020 patients. Complex forms of inguinal hernias were diagnosed in 280 of them. These forms included: bilateral and combined inguinal hernias, inguinoscrotal hernias, sliding hernias, fixed and irreducible inguinal hernias, recurrent inguinal hernias after traditional herniorrhaphy and recurrent hernias after endovideosurgical hernioplasty.

[Z-form of intraphage DNA].

The bacteriophage lambda gt10 DNA containing an insertion of 20 pairs of GC-bases capable of being arranged as Z-form was cloned. Two independent methodological approaches based on the main properties of Z-form were used to study the shape of the insertion: formation of transition bridges composed of unpaired nucleotides between left-rotating Z-forms and right-rotating B-forms of helix (j-domain) and high immunogenic activity of Z-form. O-beta-diethylaminoethylhydroxyamine (OHA), an analogue of hydroxylamine, is capable of reacting specifically with unpaired cytidines.

[The structural characteristics of the polyribosomes in the rat liver studied by means of a tritium label].

Polyribosomes isolated from the rat liver in a medium with low ionic strength were irradiated by "hot" tritium atoms under conditions providing for the replacement of the hydrogen atoms located at the surface of polyribosomes by tritium. After fractionation of such polyribosomes, the radioactivity of the obtained fractions was measured and their proportions were calculated for the total surface accessible for the tritium atoms (in %), as well as their specific radioactivity. The material loosely associated with the polyribosomes and containing amino acyl-tRNA-synthetases is more radioactive than rRNA and r-proteins, especially concerning their specific radioactivity.