TTGE profiles dendogram. TTGE of 16S rDNA amplicons of the bacterial community adherent to duodenal mucosa biopsy samples taken from 20 CD patients who were studied during both active (a) and inactive (i) celiac disease, and 10 controls (c). The dendogram gives a statistically optimal representation of similarities between TTGE profiles based on Euclidean distance dissimilarity matrix and agglomeration method of Ward. The threshold was set at 35% of dissimilarity. Bands of TTGE marker (M) are numbered as follows: 1,6, Bacteroides vulgatus; 2,3,7, Parabacteroides distasonis; 4, Bacteroides thetaiotaomicron; 5, Escherichia coli.