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Fig. 4 | BMC Veterinary Research

Fig. 4

From: Development and evaluation of a monoclonal antibody-based competitive ELISA for the detection of antibodies against H7 avian influenza virus

Fig. 4

The cross-reactivity of the competitive ELLISA immunoassay with standard chicken positive antisera against different HA subtypes of AIV and other avian viruses. The horizontal dotted lines indicate the cut-off value of 30.11% for chicken sera. The arithmetic mean of PI values for standard positive sera against AIV of H1-H9 and H11-H14 subtypes, NDV, IBV, IBDV and ALV-J were much lower than 30.11% except for the H7 positive serum

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