Ceftiofur is cephalosporin used on veterinarian's clinic at first, because it is used extensively day by day in veterinarian, its residue in animal food has already aroused great concern from people gradually. To development of ELISA kit for rapid screening the residues of Ceftiofur,we prepared the monoclonal antibodies against Ceftiofur and developed the ELISA method.and 5 hybridomas secreting antibodies against ceftiofur were selected and cloned.A Ci-Elisa method for detecting ceftiofur was established. W...