Anti-CS-A mAb and P-selectin showed comparable binding to the cell lines. A) Flow cytometry analysis of CS-A expression using anti-CS-A 2H6 mAb (15 μg/ml). B) P-selectin binding to cells using recombinant P-selectin (15 μg/ml). Open histograms show binding of the secondary antibody only (control), while filled histograms show anti-CS-A and P-selectin binding. One representative experiment out of three is shown.