[Cytoarchitecture of the vitellaria of two monogenean species, parasites of the holocephalan fish Chimaera monstrosa L. with analysis of vitelline structure in the Neodermata].

The ultrastructural features of the vitelline follicles of ectoparasitic monogenean Chimaericola leptogaster Leuckart, 1830 (Polyopisthocotylidea, Chimaericolidae) and endoparasitic Calicotyle affinis Scott, 1911 (Monopisthocotylidea, Monocotylidae), parasites of the gills and cloaca of a holocephalan fish, Chimaera monstrosa L., are described. The vitelline follicles of the studied monogenean species are composed of the cells of a single type, vitellocytes at various stages of development.

[Ultrastructural characteristics of the vitellaria, uterus and vagina of Amphilina foliacea Rudolphi, 1819 (Cestoda: Amphilinidea)].

The ultrastructural features of the vitelline follicles, uterus and vagina of the amphilinid cestode Amphilina foliacea from the body cavity of Acipenser ruthenus of the Volga basin are described. Some new distinguishing characters are revealed, including the presence of a single type of the cellular component in the vitelline follicles with sarcoplasmic processes filling the space around and within vitellocytes. The,uterus of this species is recognized by the presence of the syncytial epithelial lining with underlying secretory perikaria and different kinds of luminal projections.

[Fine structure of the cirrus sac and vagina of progenetic Diplocotyle olrikii (Cestoda: Spathebothriidea)].

Ultrastructural characteristics of the cirrus sac and vagina of progenetic and monoxenic spathebothriidean tapeworm, Diplocotyle olrikii from the body cavity of Gammarus oceanicus are described. Five loosely arranged muscle layers make up the cirrus sac wall. The nucleated syncytial cytoplasm of the ejaculatory duct's wall has apical lamellae and 3 well-developed muscular layers under epithelim.

[Implication of tuberculosis antibodies in the determination of tuberculous infection].

The summary serum pool of specific tuberculosis IgG, IgA, IgM antibodies to Mycobacterium tuberculosis (MBT) antigens was studied in children aged under 7 years who had tuberculosis or latent tuberculous infection. The test system "AT-Tub-Best-strip" (ZAO "Vector-Best", Novosibirsk) was applied. The determination of the total level of antibodies to MBT antigens makes it possible to establish the latent activity of tuberculous infection in children, to form high tuberculosis-risk groups, and to select patients for preventive medicine.

[BCG vaccination and its efficiency in children].

The efficiency of BCG vaccination was studied from the formation of a postvaccinal skin sign and postvaccinal allergy in 718 children aged under 7 years who had latent tuberculous infection and in 237 children of the same age who had tuberculosis treated at a child's tuberculosis unit during 1997-2003 epidemics. Under the present conditions, children having a scar measuring both less than 3 mm and 4 mm and more fall ill at the same rate. In children, the efficiency of BCG vaccination was associated with the formation of a skin sign (scar) and with the development of postvaccinal allergy that in children with tuberculosis was 2 less frequently developed and characterized by its rapider cession.

[Electron microscope investigation of bacteria associated with the tegument of the tapeworm species Eubothrium rugosum, a parasite of the intestine of burbot].

Bacteria associated with the tegument of the tapeworm species Eubothrium rugosum (Cestoda, Pseudophyllidea) parasitizing the intestine of burbot (Lota lota) were studied using transmission and scanning electron microscopy. Three morphological types of the bacteria were revealed. Bacteria of the first type are localized between microtrichia and fit to them closely.

[Tuberculosis of the central nervous system in preschool children].

The clinical and X-ray forms of tuberculosis were studied in 1481 patients aged under 7 years who had been treated from 1970 to 2000. Patients with tuberculosis of the central nervous system accounted for 5.5%.

[Ultrastructure of genital system ducts of Diphyllobothrium latum (Cestoda:Pseudophyllidae): the ducts of the female reproductive system].

The components of the female reproductive system of Diphyllobothrium latum, including ovary, ovicapt, oviduct, vitelline ducts, vitelline reservoir, vagina, seminal receptacle, ootype with unicellular Mehlis's gland, ootype-uterine duct and uterus were observed with the electron microscope. The epithelium of the female reproductive system ducts consists of a nucleate syncytial layer. Structural differences in apical surface of the ducts, the number of nuclei and organoids in syncytial layer as well as the number of underlaid muscles were revealed.

[Effect of unfavorable factors on the development of tuberculosis in children].

Analysis of cases of the active forms of tuberculosis in 87 children has established that the first to be affected are children from the unsuccessful families in whom BCG vaccination was either absent or was ineffective. Children from the unsuccessful families aged to 1 year get sick more often. The disease in them runs a more acute course and has manifested clinico-roentgenological symptoms.

[Substantiation of exposure limits of combustion products of elastic polyurethane foam in emergency situations].

Maximum body resistance of animals to extreme exposure to combustion products of elastic polyurethane foam has been evaluated. The results of the experiment have been extrapolated on men. Emergency threshold values for the 30-min exposure to the main combustion products of polyurethane foam are recommended.