Fig. (1) Dendrogram based on DGGE profiles representing 16S rRNA gene PCR-derived amplicons of blue BAL and red caecum samples collected from nine-weeks-old naïve female BALB/cj (n=10). DGGE: the BAL samples form a tight cluster that can be distinguished clearly from the caecum samples. Reliably separated branches on the dendrogram have a high (green) cophenetic score.