Figure 1From: The interplay between Campylobacter and Helicobacter species and other gastrointestinal microbiota of commercial broiler chickensPrincipal component analysis of the 31 chicken microbiota samples. Circles reflect the abundance of Firmicutes (A), Proteobacteria (B), Actinobacteria (C), and Bacteroidetes (D). Dotted lines encompass samples differentiated into enterotype 2 (B), 3 (C) and 4 (D). Enterotype 1 samples aggregate in the center and cannot be differentiated along these axes.Back to article page