Table 6.

Characteristics of MAS5, RMA and dChip

	Background correction	Perfect Match correction	Normalisation	Summary
MAS5	Divide the chip in 16 regions. The lowest 2% is the background. Weighted average over all the regions.	Ideal Mismatch	Scaling	1 step Tukey Biweight
RMA	Global model for the distribution of the probe intensities	No correction	Quantile	Median Polish
dChip	No correction	No correction	Invariant set using one array as default	Multi-chip linear model

Characteristics of MAS5, RMA and dChip in terms of perfect match correction, normalization and summarization method.