Figure 5.

Granulocyte-differentiated HL-60 cells migrate across inverted A549 lung epithelial cell monolayers. The migration of dbcAMP dHL-60 cells across A549 human lung adenocarcinoma cells was measured as in Fig. 4(b) using C5a (2 × 10⁻⁹) as stimulus in absence or presence of anti-β₂ integrin mAb (30 µg/ml). Bars are the mean percentage migration ± SEM from three consecutive experiments (P = 0·1399).