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. 2011 Mar 15;11:64. doi: 10.1186/1471-2334-11-64

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Copyright ©2011 Batra et al; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Comparative analysis of DENV-specific antibodies in patient sera in indirect ELISAs using DENV EDIII-based coating antigens. Anti-DENV IgG (panels A-D) and IgM (panels E-H) antibodies were detected using a mixture of four monovalent EDIIIs (panels A & E), EDIII-T (panels B & F), or b-EDIII-T (panels C, D, G & H) as the coating antigen. The antigens were coated on either polystyrene (panels A, B, C, E, F & G) or streptavidin (panels D & H) plates. The S/Co values of individual DENV-positive and -negative sera, clustered together, are indicated by filled and unfilled circles, respectively. The horizontal line in each panel indicates the cut-off corresponding to S/Co ratio of 1.