Titration of anti-FMDV serotype O antibodies induced following infection with rescued serotype O FMDV.

<p>Values are reciprocals of highest serum dilutions yielding positive results in the blocking ELISA on the indicated day post inoculation (dpi). A (-) indicates samples which were scored negative in the spot test (see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0014621#pone-0014621-g005" target="_blank">Figure 5B</a>) and N.D. indicates when samples were not collected (calf 2C6 was euthanized on day 4). Calves 2C1 and 2C5 were inoculated with serotype O FMDV (O/ISL/PAK/L1573/2009) on day 0 and the other calves were maintained in contact with them.