Putative microbial molecular pathways differentially abundant in high-lipid tasters (HLT) and low-lipid tasters (LLT) in the direct vicinity of gustatory circumvallate papillae (CVPs). The LEfSe cladogram shows the KEGG metabolic pathway hierarchy represented by rings with the consolidated pathway modules (identified in the legend) at the outermost ring, and each circle is a member within that level. KEGG modules are shaded in color according to the group in which it is most abundant (P < 0.05; LDA score 2.0).