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. 2023 Dec 23;12(1):21. doi: 10.3390/vaccines12010021

Figure 2.

Figure 2

Adsorption efficiencies of (A) RBD, (B) INI-4001, and (C) INI-2002 to AH. RDB did not adsorb to AH in 2% glycerin. The usage of TRIS buffer at pH 8.1 significantly improved the adsorption efficiency of RBD to AH. INI-4001 and INI-2002 adsorbed to AH in both 2% glycerin and TRIS buffer. A one-way ANOVA with a post hoc Tukey’s test was used to compare between groups. Asterisks indicate statistical differences between relevant groups; ** = p < 0.01, *** = p < 0.001, **** = p < 0.0001.