Fig. 3From: The role of heterogeneity in asthma: a structure-to-function perspective(adapted with permission from [19])Measured lung resistance (a) and lung elastance (b) over a wide array of frequencies using an OVW technique in healthy, mild-to-moderate asthma, and severe asthma. With increasing severity of disease, there is more frequency dependence in both RL and EL with significant shunting at high frequencies apparent in EL Back to article page