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. 2008 Aug 1;4(8):e1000144. doi: 10.1371/journal.pgen.1000144

Figure 5. Distributions of expression levels in PSGs (red) and non-PSGs (blue) for three tissue types.

Figure 5

(A–C) Distributions as estimated from Affymetrix Human Exon 1.0 ST Array data by the RMA algorithm [88]. The other eight tissue types showed similar differences between PSGs and non-PSGs (Figure S7). (D) Distribution of degree of tissue bias in expression levels for PSGs (red) and non-PSGs (blue), as measured by the statistic τ [61] (Methods). An alternative measure of tissue bias (γ) showed a similar pattern.