Figure 2.

Attachment of ETEC F4 bacteria to the ileal mucosa following challenge in F4-receptor positive pigs receiving no antibiotic or probiotic (CTRL), antibiotics (ATB), P. acidilactici (PA), S. cerevisiae boulardii (SCB) or both, PA + SCB. Results (Bars ± SEM) are presented as the mean attachment rate evaluated using the immunofluorescent assay for six pigs per treatment, except for CTRL and ATB, where five pigs were used. * = In PA and SCB treated pigs, ETEC F4 attachment was reduced compared to ATB at P < 0.05. δ = In pigs treated with PA + SCB, ETEC F4 attachment tended to be reduced compared to ATB (P = 0.06).