Figure 1
From: Comparison of Schmallenberg virus antibody levels detected in milk and serum from individual cows
Antibody levels of 88 paired bovine serum and milk samples analysed using a commercial indirect enzyme-linked immunosorbent assay for antibodies to Schmallenberg virus. (A) Distribution of observed percent positivity (PP) values. (B) Bland-Altman plot of the differences between the milk and serum results against the average PP values for the paired milk and serum samples with 95% limits of agreement shown as dotted lines.