Fig. 5

Hierarchical non-clustering heat map analysis of oral sphingolipid metabolites demonstrated metabolite abundances across i) study groups: OT (green), AT (purple), and C (orange); ii) xerostomia status: yes (light blue), no (green), and unknown (blue); and iii) types of oral candidiasis. The magnitude of association coefficients between metabolites was indicated by color intensity, with blue representing decreasing trends, and red representing increasing trends.