Figure 2
Effect on ATP on rat epithelium-free isolated airway rings. A: typical trace of the effect of 10-3 M ATP on epithelium-free rat EPB. B: Fmax to 10-3 M ATP in epithelium-free rings from trachea (n = 8), left and right EPB (n = 6), and left IPB (n = 7). Horizontal bars are Fmax in control rings. C: TR10 in rat trachea (black column) right and left EPB (hatched columns), and left IPB (cross-hatched column). Error bars are SEM. *P < 0.05.