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. 2014 Mar 14;9(3):e91977. doi: 10.1371/journal.pone.0091977

Figure 5. Ordination biplot of principal component analyses of the substrate utilization patterns of the microbial communities in the healthy and periodontitis groups using Biolog AN plate assays.

Figure 5

Arrows indicate the directions and relative importance (arrow lengths) of the 14 substrates variables.