Figure 2.b Gene clusters from Figure 1 that reflect tissue categories. (B) Cluster of genes highly expressed in all colon (7 of 7), and estrogen-receptor-positive breast-derived cell lines (2 of 2). This set of genes was also moderately expressed in most ovarian lines (5 of 6) and some non-small-lung (4 of 6), but expressed at a lower level in all renal-cancer derived lines.