Fig. 2From: Serum biomarker levels in smokers and non-smokers following periodontal therapy. A prospective cohort studyBar graphs presenting the mean levels of serum biomarkers in smokers (n = 30) and non-smokers (n = 30) at T0, T1, and T2. *p < 0.05. See Table S1 for the mean level of each biomarker at T0, T1, and T2Back to article page