Patent ID: 8148499

Claim:
A monoclonal antibody that binds to an epitope of the lipopolysaccharide (LPS) inner core of a galE mutant of an immunotype L4 strain of Neisseria meningitidis , wherein the LPS inner core epitope comprises a phosphoethanolamine moiety linked to the 6-position of Hepll of the LPS inner core, wherein said monoclonal antibody binds to the LPS inner core of L2, L4, L5 and L6 immunotypes of Neisseria meningitidis , but not to the LPS inner core of L1, L3, L7, L8, L9, L10, L11 and L12 immunotypes of Neisseria meningitidis , wherein the monoclonal antibody is the monoclonal antibody A4 produced by the hybridoma deposited with the accession number IDAC 260900-2.