Table 1. Characterization of nanoparticles for their mean size, size distribution, Zeta potential, and the encapsulation efficiency for loaded proteins and MPLA.

Sample	Particle mean size (nm)	Polydispersity index	Zeta potential (mV)	Antigen Encapsulation efficiency (%)	MPLA Encapsulation efficiency (%)
Blank-NPs	201.5 ± 17.1	0.12 ± 0.03	-3.14 ± 1.40	-	-
EgTrp-NPs	197.7 ± 32.7	0.19 ± 0.11	-5.35 ± 3.31	82.9 ± 4.4	-
EgTrp-NPs-MPLA	185.0 ± 5.8	0.22 ± 0.16	-2.92 ± 1.36	85.6 ± 1.4	85.1 ± 2