Fig. 1

Flow cytometry of the binding potential of Peptide-FITC conjugates for target cells. P4-, P6- and P8-FITC conjugates were incubated at 0, 4 or 8 µM with 10⁶ A20 cells and analyzed for peptide binding. P4 and P8 peptides demonstrated a strong dose-dependent binding to the target A20 cells. These peptides were then tested for binding specificity by exposure to a series of off-target cells as shown in Fig. 3