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Fig. 5 | BMC Veterinary Research

Fig. 5

From: Development and comparison of enzyme-linked immunosorbent assays based on recombinant trimeric full-length and truncated spike proteins for detecting antibodies against porcine epidemic diarrhea virus

Fig. 5

Comparison between commercial N-based, full-length S-based, and S1–501-based ELISAs. a The distribution of the results of the full-length S-based and commercial N-based ELISAs. The vertical dotted line represents the cut-off value of the full-length-based ELISA. The horizontal dotted line represents the threshold of the commercial N-based ELISAs, as suggested by the manufacturer. b Distribution of the results of S1–501-based and full-length S-based ELISAs. The vertical dotted line represents the cut-off value of the S1–501-based ELISA. The horizontal line represents the cut-off value of the S/P ratio of the full-length-based ELISA. c The distribution of the results of S1–501-based and commercial N-based ELISAs. The vertical dotted line represents the cut-off value of the S1–501-based ELISA. The horizontal dotted line represents the threshold of the commercial N-based ELISAs, as suggested by the manufacturer. C-N (with grey square icon): conventional PEDV naïve pigs; C-I (with black square icon): experimental PEDV inoculated conventional pigs; SPF-N (with grey round icon): specific pathogen free PEDV naïve pigs; SPF-I (with black round icon): experimental PEDV inoculated SPF pigs; Sow-F (with black triangle icon): PEDV-feedback sows

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