Fig. 4From: Tensor decomposition-based and principal-component-analysis-based unsupervised feature extraction applied to the gene expression and methylation profiles in the brains of social insects with multiple castesResults of gene expression PCA. PCA-based unsupervised FE was applied to the gene expression profiles. a and b: P. canadensis. c and d: D. quadriceps. a and c: A boxplot of PC loadings v1, (b) and (d): A distribution of PC scores u1. Red areas in (b) and (d) represent the selected genesBack to article page