Dot plots of patients with loss of A or B.

Red blood cell spheres from an A¹O patient with AML with 100% of cells showing no Helix staining (A), an A¹A2 patient with MDS with 20% of red blood cells, located in quadrant 4, having no Helix staining (B), and an A¹A2 patient with CML with 15% of cells with reduced Helix staining (C). (A), (B), and (C) were stained with Helix (LFL2) and Ulex (LFL1). (D) A BO patient with AML red blood cell spheres stained with anti-B (LFL2) and Ulex (LFL1) with 20% of cells, located in quadrant 1, having minimal B staining.