Figure 4From: Sampling and pyrosequencing methods for characterizing bacterial communities in the human gut using 16S sequence tagsComparison of the relative abundance of different bacterial taxa under the conditions tested using weighted UniFrac. Weighted UniFrac was used to generate a matrix of pairwise distances between communities, then a scatterplot was generated from the matrix of distances using Principal Coordinate Analysis. The same scatterplot is shown in A)-C), but colored by subject A), storage method B), or extraction method C). The P-values cited in the text were generated using distances from the original UniFrac matrix.Back to article page