[The virulence and cytochemical properties of Leishmania major during long-term cultivation].

It has been shown that morphogenesis of Leishmania major in each culture passage is characterised by the depletion of RNA and increase in its dispersion degree, by the change of the NADP-H-diaphorese, peroxidase and Janus green-B-oxidative activity in the promastigotes. Cytochemical peculiarities of invasive metacyclic promastigotes are an extreme depletion of RNA, its disperse form, a low activity of oxidative enzymes. This properties may manifest the pre-adaptation of Leishmania promastigotes to the development in vertebrate host.

[The epidemiological aspects of campylobacteriosis in children in arid area].

Specific epidemiological features of Campylobacter infection in children in Samarkand Province during the period of 1987-1990 are discussed. The specific proportion of this infection in the total structure of acute enteric infections was, on the average, 8.5%, and Campylobacter carriership among healthy children, 7.