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. 2023 Jan 17;8:1. doi: 10.1038/s41541-022-00593-8

Fig. 2. Correlation between titres of type-specific antibodies and opsonophagocytic killing (OPK) for four different Strep A strains following vaccination with the 30-valent vaccine candidate StreptAnovaTM that included M1, M3, M5, M12.

Fig. 2

A clear correlation is seen between OPK titre and antibody fold changes for M5 (green; R2 = 0.82), which is not apparent for the other strains. Data are from Pastural et al.32.