Table 1.
Overview of filtered genes.
| Description | Number of genes |
| 1Genes on an array | 12497 (100%) |
| 2Genes filtered out from all arrays | 1738 (14%) |
| 3Total number of genes after filtering | 10759 (86%) |
| 4Genes only detected in non-amplified material (at least one array) | 64 (0.5%) |
| 5Genes only detected in amplified material (at least one array) | 4377 (35%) |
| 6Genes detected for both groups | 6318 (50.5%) |
1Number of genes printed on an array. 2Genes not detected on any of the twelve arrays. 3Genes with signals on at least on array. 4Genes that were filtered out from all arrays with amplified material, but present on at least one array with non-amplified material. 5Genes that were filtered out from all arrays with non-amplified material, but present on at least one array with amplified material. 6Number of genes that were detected both in arrays with non-amplified material and in arrays with amplified material. These genes are again split into two groups; one with genes fulfilling the criterion of 3 observations in each group (4331 genes); and one with those not fulfilling this criterion (1987 genes).