Two sources of cRNA A (human liver tissue) and B (Central Nervous
System cell line) have been hybridized to human array (HGU95Av2) in a range
of proportions and dilutions. This object described these.For more information see Irizarry, R.A., et al. (2001)
http://www.biostat.jhsph.edu/~ririzarr/papers/index.html