PAX3 and melanoma: There was no difference in PAX3 expression levels between primary and metastatic melanoma cell lines (p = 0.644) but significantly higher levels of PAX3 mRNA were observed in adult melanocytes, both NHEM-a (P) and NHEM-a (I), than in neonatal melanocytes (p = 0.006, p = 0.004, respectively).