FIGURE 8.
FAK deletion enhances spontaneous neutrophil death. A, Bone marrow-derived wild-type (WT) and FAK−/− (KO) neutrophils were cultured in RPMI 1640 containing 10% heat-inactivated FBS at a density of 5 × 105 cells/ml. Apoptotic cells were detected by annexin V-FITC staining and 7-aminoactinomycin D (7-AAD) staining. Ten thousand cells were collected at the indicated time points and analyzed by FlowJo software. Region R1, viable cell; Region R2, early apoptotic cells; Regions R3 and R4, late apoptotic cells and necrotic cells. B, Time course of neutrophil spontaneous death. Results are means ± SD of two separate experiments.