In order to prepare monoclonal antibodies against O8 antigen of Salmonella and establish enzyme-linked immunosorbent assay for Salmonella C2 and C3 sub-group,the spleen cells from BALB/c mice immunized with heat-killed S. newport were fused with meyloma cells SP2/0. The monoclonal antibodies were detected and identified by ELISA. Possibility of the monoclonal antibodies to detect C2 and C3 sub-group of Salmonella were preliminarily determined by enzyme-linked immunosorbent assay. The result showed that four...