[Use of personal protective equipment by pathologists and legal physicians working with particularly dangerous infectious diseases].

The possibility of pneumosuit use constructed in the Institute to protect the pathology department staff at the hospitals for infectious diseases from HIV virus was studied. The suit is a hose-type suit for protection of respiratory organs and skin using the ventilated underhood space and autonomic air supply. Both the detailed description of this suit and its disinfection scheme developed and tested by authors are presented.

[Changes in the cellular reactivity of guinea pigs sensitized with Bacillus thuringiensis].

Changes in the cell-mediated responsiveness of the body under the action of different variants of B. thuringiensis have been studied in experiments on guinea pigs. The data thus obtained indicate that the development of sensitization occurs in the animals, which is manifested by the increase of the sensitivity of leukocytes to the specific allergen and by the increase of the phagocytic activity of peritoneal macrophages.

[Effect of certain factors on sheep oocyte maturation when cultured within intact follicles].

The effect of the medium composition and cultivation time on the maturation of sheep oocytes cultivated in vitro within the intact follicles was studied. The highest incidence of maturation was observed in medium 199 with 20% of sheep serum taken from an animal on the 16th day of the sexual cycle in a gaseous mixture of the following composition: 5% O2, 5% CO2, 90% N2 during 24 hrs.