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. 2020 Feb 4;8:39. doi: 10.3389/fbioe.2020.00039

FIGURE 8.

FIGURE 8

Immune responses against pneumococcal polysaccharides in mice measured by OPA. (A) Before the process optimization. (B) After the process optimization. Prevenar 13® was used as a comparator vaccine and PCV15 indicates the polysaccharide-carrier protein conjugate produced in this study by Eubiologics. (p < 0.05, ∗∗p < 0.01).