Fig. 3.
Increment of serum F4-specific immunoglobulin A (IgA) in piglets after enterotoxigenic Escherichia coli (ETEC) F4ac inoculation. Bars represent the fold change of F4-specific IgA in serum between the pre-challenge and the post-challenge period. * data were transformed from log2 values. Dpi: days post-inoculation