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Correlation between amino acid concentrations and chosen variables. Pearson correlation coefficients (r) between 19 circulating amino acids (rows, ordered alphabetically from Alanine to Valine) and chosen metabolic variables (columns: BMI, insulin, HOMA-IR). Positive correlations are shown in red, negative correlations in blue, with the strength of the correlation indicated by color intensity. Exact r values are displayed within each cell.
