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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

  Serum Meat juice
  IgG IgM IgG IgM
  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