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Fig. 2 | BMC Veterinary Research

Fig. 2

From: Detection of porcine parainfluenza virus type-1 antibody in swine serum using whole-virus ELISA, indirect fluorescence antibody and virus neutralizing assays

Fig. 2

Correlation of antibody concentration among positive samples and percent agreement at a 99% true negative rate. A IFA titer and SVN titer, B IFA titer and wv-ELISA S/P ratio and C wv-ELISA S/P ratio and SVN titer. Figure 2A demonstrated the highest correlation (r = 0.93) between IFA and SVN assays. Similarly, Fig. 2B demonstrated a strong correlation (r = 0.79). The correlation between SVN and wv-ELISA in 2C was lowest at 0.69. SVN: serum virus neutralization, IFA: indirect fluorescence assay, wv-ELISA: whole virus enzyme linked immunosorbent assay

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