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Correlation networks between metabolites in HIV-positive patients treated with antiretroviral therapy. Correlation networks between metabolites of the purine/pyrimidine metabolism (A), lysine degradation (B), tryptophan metabolism (C), and citrate cycle (D) pathways. Positive and negative correlations are depicted in blue and red, respectively. Stronger correlations have thicker lines and colored shading. Metabolites are arranged in an edge-weighted, spring-embedded layout.
