Fig. 4
From: Metabolomic fingerprinting and systemic inflammatory profiling of asthma COPD overlap (ACO)
Heatmap is a two-dimensional (2D) correlation matrix which uses monochromatic coloured cells to demonstrate whether two independent variables have a relationship with each other. Heat map demonstrating the Pearson correlation of 13 altered immunological markers with 11 significantly dysregulated metabolites present in serum of ACO patients. Red coloured cells represent negative correlation, and blue coloured cells represent positive correlation. The size of the squares indicates the magnitude of the correlation