Figure 1

GIP is increased in patients with asthma. Panel A represents the lactulose to mannitol ratio (Lac/Man) among the study cohort, measured by HPLC. Panel B represents the absorbed sucrose levels among the same patients. Each data point represents an individual patient. Circled data points indicate the patient had an abnormal sputum analysis (solid circles, eosinophilia; dashed circles, neutrophilia). In both panels, the dashed X-axis has been set at the value corresponding to the established upper limit of normal in healthy control patients.