[Biological and physicochemical properties of Brucella isolated from murine rodents].

The comparative study of the chemical composition, immunobiological activity and some physico-chemical properties of lipopolysaccharide (endotoxin) of Brucella cultures isolated from myomorph rodents in the North Caucasus has been carried out. Lipopolysaccharide obtained from these cultures has been found to be most similar to B. suis lipopolysaccharide. The authors suggest that the strains isolated from myomorph rodents outside the foci of brucellosis affecting livestock should be regarded as a separate biotype of B. suis.