[Study of the dynamics of immunograms of patients with chronic obstructive bronchitis against the background of treatment with bronchomunal].

The article searches into the efficiency of use of bronchomunal as treatment of chronic obstructive bronchitis (COB). A three-month course of treatment with the drug in 18 COB patients has been found to be associated with a positive dynamics of the most important indices of the immunogram, which fact warrants its administration as an effective COB complications-preventing alternative.

[The serological properties of a lysine producer developing in a batch culture].

Immune sera specific to bacterial cells at various development stages of periodic culture have been obtained with the purpose to study serological properties of lysin producer. Using the method of immunoenzyme analysis ELISA it is shown that there is certain dependence between the producer properties and the culture age. Different strains-producers used in production to-day are serologically close between each other.

[Gram-negative bacteria contaminating the process of producing lysine].

The authors have isolated Gram-negative bacteria of the Enterobacteriaceae family from the culture liquid of industrial fermenters with low yield of lysine. Most of them possessed the characters typical of Klebsiella pneumoniae and Escherichia coli, the rest were identified as the representatives of genera Proteus, Providencia, Enterobacter, Hafnia. Strains of Klebsiella pneumoniae, E.

[The nature of the interrelations of different Bacillus thuringiensis serotypes between themselves and other species of the genus Bacillus].

Intraspecies interrelations between representatives of 7 serotypes of Bacillus thuringiensis, as well as antagonistic interrelations between B. thuringiensis and 130 strains of 16 species of Bacillus bacteria were studied. Antagonistic activity was determined for 18 strains, representatives of genus Bacillus, with respect to B.