Figure 4.

Flow cytometric analysis of CXCR4 cell surface expression. a) Green line displaying mean fluorescence of CXCR4 surface receptor density for human UM cell line UW-1 using a FITC-avidin complex for biotinylated SDF-1α. b) Blue line displaying a negative shift in mean fluorescence caused by pre-incubating UW-1 with TN14003 (4 ng/ml) before treatment with FITC-avidin complex.