Expression of BLT1 on human leukocytes. The expression of BLT1 was analyzed in various leukocytes by FACS. PMNL (A), peripheral CD8⁺ T cells (B), peripheral CD4⁺ T cells (C), normal peripheral B cells (D), B-CLL cells (E), and B-PLL cells (F). Large panels show expression of BLT1 and the cell-specific antigen. Small panels show results with negative control antibodies. The figure depicts 1 typical experiment out of 6 except for B-PLL (2 experiments).