Fig. 1.
Motility restoration of calcium-buffered neutrophils on fibronectin with polyclonal antibodies.
(A) Where indicated, cells were [Ca++]i-buffered by a 40 minutes' incubation in 50 μmol/L Quin2/AM. The cells were then incubated with a 1:2000 dilution of the indicated antisera, rinsed, plated on a fibronectin-coated coverslip dish, and stimulated with 10 nmol/L fMLP in the continued presence of antisera. (B) Motility restoration of calcium-buffered neutrophils on fibronectin with monoclonal antibodies. Where indicated, neutrophils were [Ca++]i-buffered with Quin2/AM as in (A), incubated with a 5 μg/mL solution of the indicated monoclonal IgG, rinsed, plated on a fibronectin-coated coverslip dish, and stimulated with 10 nmol/L fMLP in the continued presence of antibody. Cells able to move more than 7 μm in 200 seconds were considered motile. In each case, more than 150 cells were assayed. The data shown are mean values ± SEM.