Comparison of gene expression measurements from Version 1 (v1) long oligonucleotide arrays and in situ-synthesized 25-mer arrays. (A) Differential gene expression measurements for all 7344 common genes. (B) Differential gene expression measurements for 2877 genes remaining after exclusion of probes or probes sets with low signal intensities (A values below the median for that array type). (C) Comparison of signal intensities for all 7344 common genes. (D) Comparison of M values obtained from the first three and the last three v1 oligonucleotide arrays. Each point represents data from a single UniGene cluster. Pearson correlation coefficients (r) are shown for each comparison. Dashed lines are lines of equality.
