Monoclonal antibodies were developed against serotype 3, P-1059 strain of Pasteurella multocida. Enzyme-linked immunosorbent assays (ELISA) were used to detect antibodies in supernatants of hybridoma cells to either a surface protective (2.5 S) antigen prepared from a 2.5% saline extract or lipopolysaccharide (LPS) prepared by the phenol-water method. Forty two...