Figure 3.

Cluster analysis of the 23 subjects positive for 16S rDNA sequences from the 300 bp cloned insert to determine whether a particular bacterial sequence was found in CFS cases versus non-fatigued controls. The subjects' classification as non-fatigued (NF) or CFS is shown at the top of the columns. The identification of the 16S rDNA sequence is shown at the right. The colored block indicates the presence and number of clones of that particular bacterial sequence; white is negative, blue is one clone, green is two clones, red is three clones, and black is four clones.