Figure 6
From: Quality control in microarray assessment of gene expression in human airway epithelium
Principal components analysis of genome-wide gene transcriptome data in failed and passed COPD subjects. The axes have been rotated presenting a top view to highlight the 2 standard deviation ovoid clustering of expression from failed and passed COPD subjects. Each axis represents one principal component (PC), with PC1 on the x axis, PC3 on the y axis and PC2 on the z axis. Failed COPD subjects are represented by red spheres and passed COPD subjects by green spheres.