The antagonistic action of lactobacilli on Helicobacter pylori

: The antagonistic activity of 9 strains of the genus Lactobacillus with respect to 25 H. pylori clinical cultures was studied with the use of the original method of ring blocks. The presence of high antagonistic activity of strains L. casei 925, L. plantarum 8 RA-3, L. fermentum BL-96 and L. 90265 was established. The newly developed method of the determination of antagonistic activity with respect to H. pylori, taking into account the biological features of this organism, was found to be convenient for work, precise and giving reproducible results.