TargetAmp 2-Round aRNA Amplification produce microgram amounts of aRNA from total RNA of a single cell (>5,000,000-fold amplification). Reactions can be completed in 2 days. The aRNA produced yields quality data using Affymetrix, GeneChip and other commercial and self-spotted arrays. Kits are available for producing aminoallyl-aRNA or unlabeled-aRNA.