Figure 1From: The relationship between inspiratory lung function parameters and airway hyper-responsiveness in subjects with mild to moderate COPD The changes from the baseline values (± SEM) of the FIF 50 (open squares), PIF (solid squares), IC (open circles), FIV 1 (solid circles) and FEV 1 (triangles) after each dose of histamine;n = number of subjects tested at each histamine dose step. Back to article page