[A method of determining glucose-6-phosphate dehydrogenase in bacteria of the genus Yersinia].

A method for qualitative assessment of glucose-6-phosphate dehydrogenase in Yersinia is suggested. The reaction mixture was prepared by mixing the ingredients in the ratios as follows: 10 microliters of 0.01 M glucose-6-phosphate, 10 microliters of 0.

[Comparative evaluation of the spectrum of lytic effects of bacteriophages TB, Wb, Fi, BK 2 and R on various Brucella species].

The lytic activity of Brucella phages TB, Wb, Fi, BK2 and R on various Brucella species has been studied. Phage TB has been found to lyse B. abortus, B.

[Brucella L-forms, their revertants and initial cultures].

The transformation of Brucella into a relatively stable bacterial L-form leads to a sharp decrease in virulence and the loss of their capacity for agglutination under the action of commercial brucellosis antiserum. When reverting from the L-form, Brucella cells partially restore their virulence and agglutinability. The pronounced restoration of these properties can be observed in revertants from the L-forms, obtained in vivo.

[Comparative evaluation of methods of inducing Brucella L forms and a study of their adaptibility in the body of animals].

The action of bicillin-3 on Brucella directly in the body of animals enhances their potential ability to convert into L-forms. One of the factors contributing to the generalization of the infection caused by the L-forms of Brucella and to their prolonged persistance in the body is the presence of an L-transforming agent (in this case, bicillin-3), which indicate that the appearing L-forms of Brucella are obviously antibiotic-dependent.