[The specificity of an immune serum to the exocellular lipopolysaccharide of Pseudomonas wieringae].

The serum obtained to exocellular lipopolysaccharide (ELPS) of Pseudomonas wieringae selectively agglutinated strains of pathovar of P. syringae and did not agglutinated strains of P. cichorii, P.