VCAM1 and melanoma: Endothelial VCAM-1 serves as a ligand for melanoma cell VLA-4 supported adhesion to the endothelial cell surface as shown for human melanoma cell lines MV3 and BLM adhering to immortalised human dermal microvascular endothelial cells (HMEC-1) [18] and for human primary melanoma cells and mouse B78chOVA melanoma cells adhering to pMBMECs [17].