Fig. 3

2D microbe-microbe interaction networks. 2D networks for a supragingival plaque, b tongue dorsum, c stool, d subgingival plaque, and e vaginal introitus samples at the genus level. Example of the effects of the patterns’ score threshold on the network’s complexity (e). Node colors reflect different taxonomy assignments at phylum level, and node sizes are proportional to the average relative abundance of the microorganism across samples. Capital letters inside square brackets represent the lowest taxonomy level identified for each OTU: G, genus; F, family; O, order; C, class; and P, phyla. The color of edges indicates relationship type: blue with a black arrow (one-way relations), red (co-exclusion), and light green (co-presence)