id author title date pages extension mime words sentences flesch summary cache txt cord-277735-a9gkath5 Leung, Danny Tze Ming Antibody Response of Patients with Severe Acute Respiratory Syndrome (SARS) Targets the Viral Nucleocapsid 2004-07-15 .txt text/plain 4010 192 55 We examined serum samples obtained from 46 patients with SARS, 40 patients with non-SARS pneumonia, and 38 healthy individuals, by use of Western blotting (WB), enzyme-linked immunoassay (ELISA), and immunofluorescence assay, using both native and bacterially produced antigens of the virus. Both the humoral and cellular arms of the adaptive immune response are presumed to be important in controlling 2 or preparation U reacted with a serum sample from a patient with SARS showing the highly reactive antigens-nucleocapsid (N) 1, N2, and N3-in the former. Second, we made a recombinant antigen of the N-terminal half of the N protein (rNa), and, when it was used in an IgG ELISA, we found results almost identical to those found with the crude viral extract (89% sensitivity and 94%-95% specificity), including 4 negative cases in common ( figure 2) . ./cache/cord-277735-a9gkath5.txt ./txt/cord-277735-a9gkath5.txt