Fig. 2
Description of the 50 “metabolites” retained for the main analysis. They include 33 clusters of strongly correlated metabolites and 17 “isolated” metabolites. For example, the 19th metabolite is an isolated metabolite (valine), while the 26th one is a cluster made of two phosphatidylcholines. For each cluster, correlations between its representative and the individual metabolites that compose that cluster are represented as a heat map (this correlation is 1 when the “cluster” is reduced to an isolated metabolite)