[Tensile strength properties of lower limb nerves in the mature age].

Tensile strength and deformation properties of tibeal and common fibular nerves were analysed in 78 cadavers of both sexes people aged from 21 to 60. It was established that in mature age nerve tensile strength and elasticity increases with low extent of elongation. At the age from 21 to 50 tensile strength and rigidity decrease with significant deformations due to nerve fibre degeneration.

[The Hydrachnidae water mites of southwestern Siberia in relation to their participation in arbovirus circulation].

The phenomenon of Hydrachnidae association with the tick-borne encephalitic viruses complex has been found out during the study of the role of the Hydrachnidae in the arboviruses circulation. We investigated the fauna, studied the quantity variation and trophic relations of these arthropods and blood-sucking Diptera. It was revealed no trophic relations between blood-sucking Diptera and mite species, where TBE strains were isolated from.

[The structural bases of the tensile strength properties of nerves].

Morphological and mechanical properties of phrenic and vagal nerves cervical regions were studied in 51 cadavers of fetuses and newborns in 28 to 40 weeks gestation. Diameter and thickness of coats, porting of cross section area occupied by connective tissue and general tensile strength were found to increase in both nerves with the gestation period growth, while relative share of nerve bundles cross section reduces. Within the last trimester of intrauterine development nerve trunk rigidity grows smaller and tensile strength does not change significantly.

[Influence of host-effect on strain variability of tick-borne encephalitis virus].

The organism of arthropods and warm-blooded vertebrates as a habitat of a virus determines the population genetic structure of tick-borne encephalitis (TBE) virus strains. The pattern of hybridization by variable zones of TBE genomes gradually changes in the course of intracerebral passages of the virus in newborn white mice. During intracelomal passages in Ixodidae hybridization alters as early as during the first passage, both for variable and (in individual cases) conservative zones.