id author title date pages extension mime words sentences flesch summary cache txt cord-277186-sj8ngpk8 He, Qigai Characterization of monoclonal antibody against SARS coronavirus nucleocapsid antigen and development of an antigen capture ELISA 2005-04-19 .txt text/plain 4192 234 54 Specific binding of the MAb S-A5D5 to both purified N195 and SARS CoV nucleocapsid antigen was effectively inhibited by human SARS positive serum and guinea pig anti-N195 serum. The monoclonal antibodies were characterized by SARS CoV-infected Vero cells and nucleocapsid-spike fusion protein-based IFA, Western blot, and N195 proteinbased ELISA. The isotype of the promising monoclonal antibody, designated as S-A5D5, was determined and was further applied to develop a specific and sensitive antigen capture ELISA for the detection of SARS CoV. The specific reactivity of the MAb S-A5D5 with purified N195 protein (Fig. 3A ) was identical to that of the human SARS positive serum (Fig. 3B) , while no reaction was observed when non-antibody secreting hybridoma was tested (Fig. 3C) . Therefore, this antigen capture ELISA, based on MAb to N protein, might provide a more sensitive method for early detection of SARS CoV infection. ./cache/cord-277186-sj8ngpk8.txt ./txt/cord-277186-sj8ngpk8.txt