Figure 4 Bifidobacterium flora in remission (after antibiotic therapy), after placebo, and after VSL#3 therapy, as assessed by analysis of clone libraries. A total of 136 clones were randomly picked and sequenced. The graph shows the percentage of single species identified by BLAST analysis. As seen for the Lactobacillus species (fig 3), the Bifidobacterium flora was more diverse in the VSL#3 group compared with both the placebo and samples before therapy. Before therapy (that is, before randomisation, after induction with antibiotics) Bifidobacterium longum bv infantis were seen almost exclusively.