Fig. 4

Analysis of principal components and UMAP clustering of left ventricular mRNA expression data. A Elbow plot illustrating the variance percentages explained by each principal component. Annotated bars indicate the principal components that exhibit the most significant separation for the specified condition. B–D Uniform manifold approximation and projection (UMAP) clustering of left ventricular mRNA expression data. Each dot represents a sample, with color coding corresponding to sex (B) (male/female; red/green), age (C) (530 and 750/640 days; red/green), and dietary regimen (D) (normal diet (ND)/western diet (WD); red/green)