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. 2015 Jan 21;5:7927. doi: 10.1038/srep07927

Figure 2. Analysis of the combined gene expression data set of Hanna et al (2009, 2010).

Figure 2

The Hanna/Hanna data set consists of 25 microarray samples that correspond to the four conditions naïve human (NH), primed human (PH), naïve mouse (NM), and primed mouse (PM). For the sample preprocessing and construction of the gene expression matrix, see text. A: Hierarchical clustering dendrogram of the samples (Spearman's rank correlation, complete linkage). The colour bar below the dendrogram provides information about the species (upper bar) and the pluripotency state (lower bar) of the single samples. The samples are labelled with their GEO identifiers; see data sets GSE21222 and GSE15603 for further details. B: Principal component analysis (PCA) of the data set. Four distinct clusters are identifiable, which correspond to the four conditions. The species of origin of the samples is indicated by the colour of the single symbols, while the colour of the ellipses enclosing the four clusters indicates the pluripotency state of the samples inside.