The possibility of differentiating Vibrio and Aeromonas on the basis of correlation of the nucleotide composition of DNA and the peculiarities of the antigenic structure.

The nucleotide composition of DNA was correlated with the peculiarities of the antigenic structure of vibrios and aeromonades. The authors propose a supplementary test for the differentiation between these microorganisms by the detection of thermolabile "indicator" antigens, most characteristic of cholera vibrios and pathogenic NAG vibrios, in immunoelectrophoresis with diagnostic serum to alcoholic preparation of NAG-vibrio flagellin.