Fig. 4

The B16F1 cells (~2.5 × 10⁵ cells/well) were incubated with 4-[¹⁸F]FEBZA for 15, 30, 60, 120, and 180 min at 0, 22, and 37 °C. Significantly higher binding was noted at 22 and 37 °C as compared to that at 0 °C. The data is expressed as percent of total radioactivity added to each well and the values are the mean ± SD (n = 4 wells). Data for 0 °C was determined only at 30, 60, and 180 min