Figure 3.

Dendrogram based on DGGE profiles representing 16S rRNA gene-derived amplicons of cecal samples collected from C57BL/6Sca mice originating from 2 breeding rooms (R1 and R2) at the same laboratory animal vendor. Each figure within the groups indicates a sample from a single mouse (numbered from 1 to 15). The scale bar represents the similarity index as a percentage (100 indicates complete similarity and 0 complete dissimilarity). The overall similarity index is 83.7% ± 3.8%. The similarity index for room 1 is 86.0% ± 3.2%; that for room 2 is 84.4% ± 3.4%.