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Fig. 3 | BMC Oral Health

Fig. 3

From: Apical periodontitis: preliminary assessment of microbiota by 16S rRNA high throughput amplicon target sequencing

Fig. 3

Significant co-occurrence and co-exclusion relationships between bacterial OTUs. Spearman’s rank correlation matrix of OTUs with > 0.2% abundance in at least 2 samples. The colors of the scale bar denote the nature of the correlation, with 1 indicating a perfectly positive correlation (dark blue) and − 1 indicating a perfectly negative correlation (dark red) between two microbial OTU. Only significant correlations (FDR < 0.05) are shown

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