Fig. 2From: Chronic infection with Chlamydia pneumoniae in asthma: a type-2 low infection related phenotypeComparison of patients with Chlamydia pneumoniae IgA−/IgG−, IgA−/IgG + and IgA + /IgG + sero-status. Group 0: Chlamydia pneumoniae IgA−/IgG−. Group 1: Chlamydia pneumoniae IgA−/IgG + . Group 2: Chlamydia pneumoniae IgA + /IgG + Back to article page