Table 1.

Overview of the physicochemical properties of particles before and after Env conjugation.

Particle Preparation	Hydrodynamic Diameter/nm	Polydispersity Index	Zeta Potential/mV
SiNP200	244 ± 2	0.085 ± 0.067	−6.6 ± 1.5
SiNP200-Env	371 ± 9	0.228 ± 0.096	−6.3 ± 5.7
SiNP100	102 ± 1	0.021 ± 0.014	−39.2 ± 2.1
SiNP100-Env	131 ± 2	0.045 ± 0.019	−9.6 ± 2.9