[Age characteristics of the bile duct system functioning in the norm and in the gastrointestinal system pathology]. / Vozrastnye osobennosti funktsionirovaniia zhelchevyvodiashchei sistemy v norme i pri patologii zheludochno-kishechnogo trakta.

At the present the age-specific particularities of many organs and systems used in diagnostics are determined. The function--morphological state of the biliary system in different age groups is poorly studied. The age-specific particularities of biligenesis in norm (control group--90 persons) and in pathology were studied by the following traditional methods: multifractional chromatic duodenal catheterization, dynamic scintigraphy of gallbladder, dynamic ultrasonic cholecystography. There were 167 patients with gastroduodenal diseases (chronic gastritis, gastric, duodenal and intestinal ulcers) and 115 patients with calculous cholecystites and chronic hepatites. The gastroduodenal affections reinforced the appearnce and the course of typical age alterations of biliary system. Patients sufferin from hepatobiliary pathology over 5 years biliation ability has remained in normal values.

[Morphometry of living and metal salt impregnated nerve fibers]. / Morfometriia perezhivaiushchikh i impregnirovannykh soliami metallov nervnykh volokon.

Quantitative comparison on diameter distribution of some structures in vital and fixed neuronal fibres treated with salts of heavy metals has been performed. Rabbit and frog myelin fibres of the ischiadic and vagal nerves impregnated after Bielschowsky--Gross, fixed in 12% neutral formalin and treated after Gomori for acid phosphotase with fixation in cooled acetone have been studied. The diameters of neuronal fibres, axial cylinders and cords have been measured through the microscope with an ocular micrometer. Quantitative comparison of survived and fixed fibres has demonstrated that in the preparations treated with silver and lead salts, as a rule, not the whole fibre is demonstrable, not its axial cylinder, but only a part of the axial cylinder, namely, its centrally situated filamentous cord. It is most probable that, in this case, the axial cord formation is connected with the effect of fixatives. However, axial cord formation is possible in vital, nonfixed fibres in the zone of intersections and swollen incisions. The working hypothesis explaining this phenomenon is represented.