To explore this possibility, we performed single cell RNA sequencing on a total of 47 skin and tumor samples from 36 animals: 15 wildtype skin samples, 10 black Braf CA/+ skin samples (which contain only nevi), 3 albino Braf CA/+ tumors, 4 albino Braf CA/+PtenΔ/+ tumors, 4 black Braf CA/+PtenΔ/+ tumors, and 11 sample-matched tumor-adjacent-skin samples collected alongside each of the 11 tumor samples (Fig. 2a, Supplementary Data 18, Table 1). This evidence concerns the gene BRAF and neoplasm.