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Figure 1 | BMC Bioinformatics

Figure 1

From: Reproducibility of gene expression across generations of Affymetrix microarrays

Figure 1

Distribution of the number of probe sets versus the number of probe pairs in common is shown for the 8,044 probe sets on both the older HuGeneFL and the newer HG-U95A Chips. The Y-axis of the line graph appears on the left, while the Y-axis of the column graph appears on the right. Each of the 8,044 probe sets is represented in only one column. All expression measurements across all 14 chips were used to calculate each column's correlation coefficient. The effect of the number of common probe pairs on the correlation of the gene expression values is illustrated. The correlation between the gene expression values across the two generations of chips increases as the number of common probe pairs increases; however, there are few probe sets with many common probe pairs.

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