Figure 2From: Reduced rhinovirus-specific antibodies are associated with acute exacerbations of chronic obstructive pulmonary disease requiring hospitalisation IgG 1 antibodies to common bacterial respiratory pathogens in COPD IgG 1 antibody levels to (A) H. influenzae (P6) and (B) pneumococcal surface antigen (PspC) are plotted for stable and exacerbation-prone COPD patients, with the medians indicated. The lower limit of detection is highlighted with a dotted lineBack to article page