Fig. 1From: Relationship between salivary stress biomarker levels and cigarette smoking in healthy young adults: an exploratory analysisComparison of the levels of salivary stress biomarkers between smokers and non-smokers: cortisol (a), SIgA (b), IL-1β (c), IL-6 (d), and TNF-α (e). *P < 0.05 by linear regression analysis after adjusting for ageBack to article page