Figure 7.
GzmB is only expressed in fractions of CD4+ and CD8+ PBMCs, but not in CD66b+CD4-CD8- PMNs of 4 patients and 3 healthy individuals. (A) PBMCs and PMNs were isolated from 4 patients (1-4) and 3 healthy individuals and analyzed (FACSCalibur) by staining with either mAb to CD4 and CD8 (PBMCs and PMNs), or mAb to CD66b (PMNs), and subsequently with αhugzmB mAb (1:50) as described in “Materials and methods.” Numbers in graphs indicate the percentages of gated cells. (B) Similarly prepared PBMCs and PMNs from another individual showing a comparable phenotype as the healthy individuals mentioned in panel A were centrifuged on microscope slides and stained with May-Grünwald/Giemsa as described in “Materials and methods.” Arrowheads indicate mononuclear cells; arrows, polymorphonuclear leukocytes.