CD274 and melanoma: Colocalization analysis of MET and PD-L1 on the four melanoma cell lines reveals a PCC of 0.768 (±0.04) for the SH-4 cell line; 0.699 (±0.04) for the RPMI-7951 cell line; 0.750 (±0.09) for the SK-MEL-28 cell line; and 0.754 (±0.03) for the WM35 cell line.