[Dry selective culture medium for isolation of streptococci (streptococcal broth)].

Culture medium--dry rich broth for isolation of streptococci--is developed. It is characterized by good growth of microorganisms, accumulative effect and prominent inhibiting influence on growth of associated microorganisms. During growth of streptococci on the medium their main biological characteristic did not change.

[A dry nutrient medium for the cultivation of Leishmania promastigotes].

A dry medium formulation which provides the growth and reproduction of Leishmania promastigotes was designed. The medium has been prepared by using nondietary protein raw material, it contains domestic-production ingredients of that in high supply. The nutrient basis of the medium is enzymatic peptone (a source of amine nitrogen).

[A dry nutrient medium for determining the sensitivity of pneumococci to antibiotics].

A dry nutrient medium for assay of Pneumococcus antibiotic sensitivity was developed. The medium is based on a casein-yeast hydrolysate, a hydrolysis product of casein and nutrient yeasts, which are noneatable raw materials. The chemical ingredients selected to meet the Pneumococcus physiological requirements exclude addition of biological fluids such as blood and serum.

[Pyocin typing of Pseudomonas aeruginosa strains].

The possibility of using the typing of P. aeruginosa strains by their pyocins as one of the epidemiological markers in the study of P. aeruginosa hospital infections has been established.