[Provisionality phenomenon in the histo- organo- and systemogenesis].

This review summarizes the results of the study of the provisionality phenomenon in the development of the organs of the urinary system (mesonephros, metanephros) in viviparous (human, rat) and oviparous (bird) amniotes, human organs of mixed origin (pituitary, ovary, stomodeum) reparative regeneration of supporting tissues (in humans and Syrian hamster), morphogenesis of primary hepatic cancer developing against the background of superinvasive opisthorchiasis. It is shown that during the development of tissues and organs, the stages of provisional and definitive histo- and organogenesis could be determined; saltatory mechanism is typical for embryonic organogenesis (formation of cartilaginous skeletal primordia, meso- and metanephrons) and foci of oncogenesis. Transformation zones of the type of tissue organization in the epithelium are located in the areas of contacts of the derivatives of different embryonic primordia.

[Hemostasis in acute ulcerous bleedings from the stomach and duodenum in experiment].

For the first time in experiment on animals ways of surgical treatment of 'sharp ulcer bleedings' stomach and a duodenal gut with application microporous nikelid-titanic implants are developed, the morphological picture healing processes in ulcer defect with implanted microporous nicelid-titanic plate is studied. Introduction in 'ulcer defect' microporous Ti-Ni implants, the sated 7,5% a solution capropher, provides a stable hemostasis, reduces risk of relapse of bleedings (p < or = 0,05). Possibility of performance of operations by the developed technique is proved at sharp ulcer bleedings of a stomach and a duodenal gut.

[Immunological changes in old-age group children with primary and secondary tuberculous infection].

In modern society, there is a rise in the incidence of tuberculosis in all age groups, including children and adolescents. In old age group, a specific inflammation is detectable from Mantoux test results only in every four children. Tuberculous infection is diagnosed in half of cases when they turn to physicians for complains.

[Predictors of the progress of latent tuberculosis to clinically active one].

The question recently arises as to the diagnosis of tuberculous infection at early stages of its development. Tuberculin diagnosis ranks below due to the rise ofcomorbidity, including allergic diseases. There is increasing evidence for the leading role in the development of this or that type of tuberculous infection.

Tissue reactions to modern suturing material in colorectal surgery.

Morphological changes in the wall of the large intestine were studied after its manual suturing by a double-row interrupted suture with modern suture threads. Light and scanning electron microscopy showed "fuse properties" and "sawing effect" of polyfilament twisted threads (e.g.