Figure 6.

Effect of pertussis toxin pretreatment (PTX, 50 ng ml⁻¹ for 18 h) on the attenuation by salbutamol of eosinophil-activating cytokine release from human cultured airway smooth muscle cells stimulated with IL-1β (1 ng ml⁻¹) for 24 h. Data are expressed as a per cent of the control response to IL-1β alone and represent mean±s.e.mean of duplicate values from independent experiments using cells cultured from four different donors, cell passages 4 – 6. ^*P<0.05 compared to IL-1β alone by Bonferroni's t-test. NS P>0.05 by ANOVA.