Fig. 2

Sample clustering and soft threshold screening. a Sample clustering to detect outliers and the trait heatmap to display the sample traits. b Analysis of the scale-free fit index for various soft-thresholding powers (β). c Analysis of the mean connectivity for different soft-thresholding powers. d Histogram of the connectivity distribution when β = 4. e Verification of the scale-free topology when β = 4. WGCNA, weighted gene co-expression network analysis