Fig. 3
From: Tobacco-smoking induced GPR15-expressing T cells in blood do not indicate pulmonary damage
Frequency of GPR15+ cells among T cells in non-smoker of volunteers and never smokers in lung patients. Lung diseases do not influence the frequency of GPR15+ cells in blood The dashed line illustrates the cut-off of 7.6% for discrimination between never and former/current smokers. Box plots illustrates median, 25% and 75% percentile, non-outlier max and – min, outlier (circle) and extremes (triangle). Number of volunteers and patients is enclosed in parenthesis. COPD, chronic obstructive pulmonary disease; ILD, interstitial lung disease