Table 2 Mean and standard deviation of optical density readings for 100 serum samples from two non-infected herds, together with the calculated cut-off value for negativity by ELISA using either whole cell (WC) or recombinant Bhlp29.7 as plate coating antigens with serum and meat juice samples
From: The use of ELISAs for monitoring exposure of pig herds to Brachyspira hyodysenteriae
| Â | Serum | Meat juice | ||||||
|---|---|---|---|---|---|---|---|---|
| Â | IgG | IgM | IgG | IgM | ||||
| Â | WC | Bhlp29.7 | WC | Bhlp29.7 | WC | Bhlp29.7 | WC | Bhlp29.7 |
Mean ± SD | 0.63 ± 0.1 | 0.52 ± 0.10 | 0.68 ± 0.11 | 0.78 ± 0.09 | 0.32 ± 0.06 | 0.68 ± 0.13 | 0.71 ± 0.09 | 0.64 ± 0.12 |
Cut-off value | 0.93 | 0.83 | 1.0 | 1.06 | 0.49 | 1.08 | 0.99 | 0.96 |