Fig. 4From: DNA methylation profiles of bronchoscopic biopsies for the diagnosis of lung cancerPrincipal component analysis of TCGA data on lung cancer. TCGA DNA methylation data of 1163 CpG loci present in both, the TCGA data set as well as the set of 1303 differentially loci were subjected to a PCA (unsupervised). Red spheres: AC samples (n = 439), blue spheres: SQC samples (n = 369), green spheres: control tissue samples (n = 26)Back to article page