[Introgression of Aegilops genetic material into the genome of hexaploid triticale].

Cytological analysis of different meiosis stages was performed in F4 hybrids in comparison with the F1 hybrids obtained through crosses between the hexaploid triticale and genome-substitution forms of Aurolata (AABBUU) and Aurosis (AABBS(sh)S(sh)) wheat, in which D genome of common wheat Aurora was substituted for the genomes of Aegilops umbellulata and Ae. sharonensis, respectively. It was demonstrated that in F4 the level of bivalent conjugation was substantially higher than the expected one.

[Work conditions and health status of workers in present-day production of disperse azo dyes].

The work conditions appeared to be unfavorable in modern production of dispersed nitro dyes, having up-to-date technologic equipment and automated control systems. The main occupational hazards are semiproducts (nitroaniline derivatives containing chlorine, bromine and cyanides) used as diazo components in dyes synthesis, dispersers based on sodium lignosulfonate, outlet forms of dispersed nitro dyes. Medical examination of the workers exposed to combination of chemicals amounting several times over the MACs proved frequent diseases of upper respiratory tract and cardiovascular system, functional disorders of liver and CNS, propensity for allergic conditions.

[Acanthamoeba keratitis (literature review and case report)].

Clinical course, specificities in ophthalmologic and parasitologic diagnosis, drug and surgical treatment of keratitis caused by Acanthamoeba are described for the first time in Russian literature. Experience gained in two-year follow-up of a male patient with the condition who used soft contact lenses for a long time before he fell ill and the foreign literature data prompted the authors describe this disease.