Fig. 3.

T-syn^−/− neutrophils have markedly impaired rolling on E-selectin in vitro. Bone marrow leukocytes of the indicated genotype were perfused over E-selectin immobilized at 500 sites/μm². (A) Number of neutrophils rolling per field of view. (B) Number of neutrophils that tethered to E-selectin during the first 30 s was divided by the number of neutrophils delivered across the field of view in the focal plane. (C) Velocities of neutrophils rolling on E-selectin. The data represent the mean ± SEM from five experiments. *P < 0.01.