[Radioecological monitoring of the Yenisei River and citological characterization of a submerged aquatic plant Elodea canadensis].

The study was devoted to investigation of the contents of radionuclides and of heavy metals and to evaluate the frequency of chromosomal aberrations in samples of Elodea canadensis, a submerged plant, collected in different parts of the Yenisei River. The samples were collected in the area subjected to radioactive impact of the Mining-and-Chemical Combine (MCC) at Zheleznogorsk and in the control area, upstream of the MCC. The investigations shown that elodea biomass in the area affected by MCC operation contained a long inventory of artificial radionuclides typical for the MCC discharges.

[Neurohormonal regulation of the development and regenerative processes of bone and cartilage tissues].

Neurohumoral regulation of cartilaginous and osseous tissues was investigated in different stages of ontogenesis. It has been shown that these tissues are targets practically for all hormones produced by the body. The reciprocal reaction of osseous and cartilaginous tissues to different concentrations of hormones was estimated.

[Genetically determined diseases of the hip joint (a conceptual model)].

The authors consider the problem of pathology of the hip joint from the point of view of the conception "Dysplasia-coxarthrosis". A single system of the ideas concerning dysplastis pathology is presented, which will allow to unify the methods of diagnosis and treatment of dysplasia of the hip joint in children, adolescents and adults with the aim of prevention of crippling diseases of the joint.