Available from Epicentre Biotechnologies, the TargetAmp Nano-g Biotin-aRNA labeling kit produces Biotin-aRNA, or cRNA, for transcription profiling using the Illumina gene expression system, including the Expression BeadChips. The Biotin-aRNA produced by the kit reaction from 100 ng of input total RNA has been shown to detect more genes (RNA transcripts) than that produced by another brand using 400 ng of input total RNA, according to the company. The kit also produces microgram amounts of Biotin-aRNA with high signal intensity from as little as 25 ng of input total RNA. A linear RNA amplification process preserves the relative transcript abundance of the sample.