Fig. 5From: The role of heterogeneity in asthma: a structure-to-function perspective(reproduced with permission from [32])Relationship between baseline CV and AHR. Here, AHR was measured by the concentration of methacholine that elicits a 20% decrease in the subject’s FEV1 compared to baseline (PC20) dose. Lower PC20 doses denote higher degree of AHR. Note that there is a negative correlation between the baseline levels of ventilation heterogeneity, (i.e., the CV), and the PC20 dose in the asthmatic subjectsBack to article page