Figure 2. The plots of principal component analysis of microbiota composition and biodiversity from faecal samples.

(A) Principal component analysis of the DGGE data for the fecal bacterial community compositions of the CD patients and controls. Each circle is representative of a single sample and shaded according to the abundance of DGGE bands. The plot shows different bacterial community composition in the faeces from the patients and controls. The percentage of variation explained by each principal component is shown in brackets. (B) Band numbers and bacterial diversity obtained from the faecal profiles of CD patients. For each group, the mean values and standard deviation (bars) are shown. Bacterial diversity of CD patients was significantly lower compared with the controls. **, p<0.01.