BRAF and melanoma: Treatment with MC903 at 0.1 nmol, 0.4 nmol, or 2 nmol on Braf/Pten ears induced increasing levels of TSLP (Figure 2F) that consequently promoted development of melanoma lesions shown by increasing numbers of SOX10+ pigmented and nonpigmented melanoma cells in the dermis (Figure 2G; see also Supplemental Figure 3 for cell counting).