Fig. 2.

Anti-TSOL18 antibody titres (geometric mean ± S.D.) in vaccinated pigs following immunisation with TSOL18. Pigs received three immunisations and serum samples obtained prior to the first immunisation (PB) and 2 weeks after each immunisation (2wpV1, 2wpV2, 2wpV3) as well as at the time of necropsy (Nec). Antibody titres were determined against recombinant TSOL18 expressed as a maltose binding protein fusion with sera serially diluted from 1:100 and the titre calculated as the dilution at which the O.D. in ELISA equalled 0.5.