B16F0, B16F1, B16F10 (ATCC), ΔBraf/Pten−/− (derived from B6.Cg-Braftm1MmcmPtentm1HwuTg(Tyr-cre/ERT2)13Bos/BosJ mice (UNC-Chapel Hill Mouse Phase 1 Unit)) cell lines PBT2460 and PBT2130 (Drs. W. Kim and J. Bear, UNC-Chapel Hill), and human melanoma cell lines WM1158, SBCl2, Sk-Mel-119, Sk-Mel-173, and WM2664 (Dr. J. Shields, UNC-Chapel Hill) were maintained in DMEM with 4.5 g/mL D-Glucose and 10% FBS. Human melanoma cell lines RPMI7951, RPMI8322, and Mel505 (Dr. J Shields, UNC-Chapel Hill) were maintained in RPMI with 10% FBS. The normal human melanocyte line NHM7 (Dr. J Shields, UNC-Chapel Hill) was maintained in Media 254 (Gibco) supplemented with HGMS (Gibco). EC (isolated by us previously 8 (link)) were maintained in Endothelial Cell Media (EC-Media), composed of DMEM with 1g/L glucose, 5 μg/L bFGF, 10 μg/L VEGF, 100 mg/L heparin, antibiotics, and 10% NuSerum IV (BD).