Figure 2From: Evaluation of nasal symptoms induced by platelet activating factor, after nasal challenge in both healthy and allergic rhinitis subjects pretreated with rupatadine, levocetirizine or placebo in a cross-over study design Time-evolution on total nasal symptom score (T4SS) after repeated platelet-activating factor (PAF) nasal challengue, evalueted by Likert scale: (A) in healthy subjects, and (B) in seasonal allergic rhinitis (SAR) patients. Back to article page