What are the normalization genes?
In order to provide an additional mechanism to normalize data, probe sets representing 100 constitutively expressed transcripts were tiled on both the Rat 230A and Rat 230B arrays. The normalization set was found to be expressed in a range of tissues and cell lines. The set was selected to represent a range of signal values from low to high. Furthermore, in-house experiments, there was minimal variation in signal for these probe sets in the tissue panel (%CV less than 40%).