[Comparison of various aspects of normal and filament forms of S. enteritidis IV].

Induced filament formation of S. enteritidis by means of sodium chloride was previously reported. In this study various aspects of normal and filament forms of S. enteritidis are compared. Filament forms had lost some of their biochemical activities when compared with the normal forms of S. enteritidis. There was no serological difference between the two forms. We were unable to show any difference in antibiotic sensitivity, because concentrated sodium chloride inhibited cell growth. No difference was observed between the two forms in pathogenity against mice. The resistance to heat was decreased in filament forms. In addition to these, staining and spreading of nuclear elements showed some variations in the young and old filaments.