Construction and validation of the APOCHIP, a spotted oligo-microarray for the study of beta-cell apoptosis

BMC Bioinformatics

Table 3 Variance in a one-colour system.

concentration μg/20 μL	One-color variance	One-color variance, block	2σ_s²
1/3	0.093	0.056	0.027
1	0.057	0.053	0.029
2	0.101	0.044	0.040
3	0.048	0.030	0.027
4	0.046	0.033	0.031

In the first column a global median centering is used, and in the second a median centering for each of the 8 blocks is used. The last column gives 2σ_s² for comparison.

ISSN: 1471-2105