This antibody reacts with a well defined epitope (W40, R-53) on CD59, a 18-20 kDa GPI-anchored glycoprotein expressed on the surface of all hematopoietic cells - it is widely present on cells in all tissues. This antibody does not compete with MEM-43/5.
Separation of human neutrophil granulocytes (red-filled) from human CD59 negative blood debris (black-dashed) in flow cytometry surface staining of human peripheral blood, labeling CD59 with Anti-CD59 Antibody [MEM-43] (A85989), (concentration in sample 0.3 µg/ml, GAM APC).