“Mucosal challenges … nmol), bradykinin (5 nmol), capsaicin (0.4 nmol), or allergen (ovalbumin, …) increased the appearance of a plasma tracer (131I-labeled albumin previously injected intravenously) in the airway lumen within 10 min (10-20 times … < 0.001), whereas the contractile agent carbachol (8 nmol) was without exudative effect.”