[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.