IGHG3 and peripheral arterial disease: When compared to healthy controls, IgG3‐expressing Bmem cells trended to be higher in absolute numbers in PAD patients (Figure 4g) and were significantly higher as a proportion of total HA‐specific IgG+ Bmem cells than in healthy controls (P = 0.011; 25% vs 7.5% pre‐booster; Supplementary figure 3).