\name{Dilution} \docType{data} \alias{Dilution} \title{AffyBatch instance Dilution} \description{ This \code{\link[affy]{AffyBatch-class}} object represents part of a dilution experiment dataset. } \usage{data(Dilution)} \format{ An \code{\link[affy]{AffyBatch-class}} object containing 4 arrays. } \source{Two sources of cRNA A (human liver tissue) and B (Central Nervous System cell line) have been hybridized to human array (HGU95A) in a range of proportions and dilutions. This data set is taken from arrays hybridized to source A at 10.0 and 20 \eqn{\mu}g. We have two replicate arrays for each generated cRNA. Three scanners have been used in this study. Each array replicate was processed in a different scanner. For more information see Gautier et al., affy - Analysis of Affymetrix GeneChip data at the probe level \url{http://bioinformatics.oxfordjournals.org/content/20/3/307.full.pdf} Bioinformatics, 2004 } \keyword{datasets}