Figure 2

Cluster tree for the twin pair ratios of gene expression data (n=14 665 genes). Cluster 1 had a total of 274 differently expressed genes (139 upregulated, 135 downregulated), Cluster 2 had 728 differently expressed genes (290 upregulated, 438 downregulated) and Cluster 3 had 828 differently expressed genes (503 upregulated, 325 downregulated) within the twin pairs. Twin pair ratios (n=26 BMI-discordant pairs) for the gene expression were used for the cluster analysis.