Fig. 2

Differences in abundance of plasma protein and IgG glycans between COPD subjects and healthy controls. Differences in glycan abundances are shown as box plots. Each box represents the 25th to 75th percentile. The upper whisker extends from 75th percentile to the values within 1.5 × IQR (where IQR is the inter-quartile range, or distance between the first and third quartiles). The lower whisker extends from 25th percentile to the values within 1.5 × IQR. Data beyond the end of the whiskers are called “outlying” points and are plotted individually. AntF: antennary fucosylation; G1: monogalactosylation; G4: tetragalactosylation; GP: glycan peak; HB: high branching; LB: low branching; S3: trisialylation; S4: tetrasialylation; #1: discovery cohort; #2: replication cohort