Fig. 3From: Chlamydia pan-genomic analysis reveals balance between host adaptation and selective pressure to genome reductionFunctional annotation with Clusters of Orthologous Genes (COGs) assigned to OGs from the core, periphery, and singletons. Excluded COGs: Function unknown (S) and General function prediction only (R). In addition, 124, 663, and 313 OGs from the core, periphery, and singletons respectively were not assigned to any COGBack to article page