[Nanoparticles in the environment and their effect on hydrobionts].

This paper summarizes the data on the effect of engineered nanoparticles on aquatic organisms. The issues of penetration and accumulation of nanoparticles in the body of hydrobionts and their toxic effect, biotransformation, and migration along food chains are considered. It is demonstrated that the behavior of nanomaterials in the environment and their effect on living organisms have been studied insufficiently and require close attention, because their release into the environment will increase in the very near future.

Immune status during odontogeneous abscesses and phlegmonas.

Odontogeneous abscesses and phlegmonas are considered as one of the most urgent problems for stomatology. By its localization and complications the patients suffering from this pathology clearly show weakening of protective mechanisms of organism. By the use of modern methods of immunologic research we studied the nonspecific, cell, humoral and specific immune status.

[Epidemiological and immunological monitoring of tetanus in Georgia (Republic)].

During the period of 1961-1990 the regular immunological and epidemiological monitoring of tetanus was carried out. At the prevaccination period (1937-1960) 140 cases of tetanus were registered, 77 patients died (morbidity rate being 0.97-0.