Might be good to use as benchmark to judge tiling arrays and protein chips
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Retrieve&dopt=AbstractPlus&list_uids=16964229&query_hl=5&itool=pubmed_docsum
Nat Biotechnol. 2006 Sep;24(9):1151-61.
The MicroArray Quality Control (MAQC) project shows inter- and intraplatform reproducibility of gene expression measurements.
