Fig. 4From: The effects of removing dead bacteria by propidium monoazide on the profile of salivary microbiomeCo-occurrence networks of Group C and P. Nodes represented genera (coloured by different phylum), which size indicated the number of genera connected. Lines between nodes represented positive correlations (A) or negative correlations (B), among which those shared by both Group C and P were coloured as green, while those specific in either group were coloured as blue (positive) and red (negative), respectivelyBack to article page