Figure 1
From: Smoking, season, and detection of chlamydia pneumoniaeDNA in clinically stable COPD patients
Relation of Chlamydia pneumoniae (CP) DNA prevalence in blood peripheral mononuclear cells versus month of study visit among 100 patients presenting to a respirology referral clinic. CP-DNA positive (solid), CP-DNA negative (thatched) or proportion of all monthly specimens which were CP-DNA positive (line).