As a comparison we investigated PAX gene expression in the melanoma cell line UACC62 which had only PAX8 expression (0.04-fold), and the prostate cancer cell line PC-3 which expressed PAX6 at 5-fold and PAX5 and PAX8 at the same level as housekeepers (1-fold) (Figure 4). Here, PAX8 is linked to prostate cancer.