In TaqmanTM qRT-PCR analysis of UM-C4 and UM-C6 tumors, ALDH1A1 is generally expressed at higher levels than ALDH3A1 and ALDH5A1. ALDH1A1 gene expression is 2.8-fold higher in CoCSC than in NTG cells, and despite slight elevation of ALDH3A1 expression in CoCSC versus NTG populations (Figure 3C), its message is barely detectible in either tumor line. This evidence concerns the gene ALDH1A1 and neoplasm.