Figure 1
From: Reproducibility of microarray data: a further analysis of microarray quality control (MAQC) data
Hierarchical clustering. Hierarchical clustering of 293 arrays from the five microarray platforms, four samples, and three sites, in most cases, five technical replicates for each sample. The five platforms are colored: Affymetrix (AFX), Applied Biosystems (ABI), Agilent Technologies (AG1), GE Healthcare (GEH), and Illumina (ILM). The four samples are colored: A, B, C, and D. The three sites are colored: site 1, site 2, and site 3. The correlation coefficient of the standardized intensity measurements over the 12091 genes were calculated for all pairwise combinations of the 293 arrays. The one-minus-correlation is used for the distance metric.