[The heterogeneity of the antilysozyme activity in populations of opportunistic enterobacteria]

1,484 clones of 104 strains representing 11 genera of the family Enterobacteriaceae and having different levels of lysozyme activity were tested for the presence of this activity. In the populations of 53.9% of strains under study the heterogeneity of the levels of antilysozyme activity was noted. In 13.4% of strains under study clones having no antilysozyme activity were detected. Among Escherichia, Hafnia and Enterobacter strains without antilysozyme activity individual clones having such activity were detected; these clones constituted 3-17% of the total number of the studied clones.