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Figure 3 | BMC Genomics

Figure 3

From: Performance evaluation of commercial short-oligonucleotide microarrays and the impact of noise in making cross-platform correlations

Figure 3

Correlation of differential expression ratios between CodeLink and GeneChip. Pearson correlation coefficients (r) are shown for each comparison. (A.) When all 10,763 overlapping genes are compared between platforms the correlation is 0.62. (B.) All values for genes concordantly 'absent' were removed prior to making the cross-platform correlation. In this case, 3,362 genes are called 'present' on at least 1 of the 5 replicates across both tissues and platforms. (C.) 2,569 genes called 'present' on at least 3 of the 5 replicates across both tissues and platforms. The correlation improves further to 0.74. (D.) Genes called present on all 5 replicates across both tissues and platforms. For these 1,760 genes the correlation is 0.79.

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