[i] Note. The four libraries used for the example analysis are all from the Cancer Genome Anatomy Project database (http://www.ncbi.nlm.nih.gov/ncicgap/). They have all been prepared from the same patient, using microdissection and plasmid cloning techniques (Krizman et al. 1996). Each library represents a different level of prostate pathology ranging from normal epithelium, prostatic intraepithelial neoplasia (PIN) to invasive prostatic tumor. Note that library Pr4 had fewer clones sequenced than the other libraries.