id author title date pages extension mime words sentences flesch summary cache txt cord-270421-ytrkob0h Chen, Pan A rapid and quantitative assay for measuring neutralizing antibodies of Coxsackievirus B3 2016-03-04 .txt text/plain 4718 249 49 The CVB3 pseudovirus system was used for quantifying neutralizing antibody (NtAb) levels of 720 human serum samples and showed superior specificity and sensitivity comparing traditional cytopathic effect (CPE) assay. For the lack of CVB3 national antibody standard, we used a mouse serum collected from mice immunized with formalin inactivated CVB3 virus 112 strain and quantified its neutralizing activity against CVB3 (Nancy)-luc pseudovirus in duplicate on the same plate in six independent tests. We next used this pseudovirus assay to measure CVB3 neutralizing antibodies titers in serum samples collected from health adults (18-65 years old). In summary, we established a single round infection system of CVB3 and developed an in vitro assay for detecting neutralizing antibodies in clinical serum samples, and it was a superior surrogate of the assays using wild type viruses including traditional CPE assay and enzyme-linked immunosorbent spot assay. ./cache/cord-270421-ytrkob0h.txt ./txt/cord-270421-ytrkob0h.txt