We re-clustered the progenitor and tumor cells (Figure 4D), revealing seven distinct clusters consisting of neural crest-like (NC-like), melanoblast-like, proliferating, progenitor, angiogenic, stress-like, as well as an unidentified cluster marked by tmsb1, krt91 and vim (Figure 4D, Table S9). This evidence concerns the gene VIM and neoplasm.