Figure 4
From: Preliminary analysis of salivary microbiome and their potential roles in oral lichen planus

Co-occurrence networks of connected microbial clusters (modules) of Streptococcus comprising species.
Each node represents an OTU colored by the genus-level phylotypes and each edge represents a significant co-occurrence relationship colored by the sign of the association (red negative, black positive). Two highly connected microbial clusters (Module A,B) in healthy controls (H) and one module (Module C) in reticular OLP (R) were observed in the networks.