Serotyping of Lipooligosaccharides of Neisseria Meningitidis Group B with Monoclonal Antibodies and Dot- blotting

The serotyping tests of lipooligosaccharides of Neisseria Meningitidis(Nm)group B with 4 monoclonal antibodies and dot-blotting were carried out with the 9 1 strains collected in different decades and areas. Total rate of serotyping is 90. 1 1% . The 63. 74 % of which was L3. 7. 9 com- pound and 12. 09% wasL1. 3. 7. 9 compound,as the first and the second principal strains. The result provides basis for identifying main LOS causing epidemic encephalitis Nm group B,and lays a foundation for screening test of Nm group B strain and of their LOS antigen.