Fig. 4.

(a) Mean loading efficiency of various BrCy dyes and ICG into nano-sized EGs. (b) Mean zeta potentials for RBCs, nEGs, and BrCy- and ICG-encapsulating nano-sized EGs suspended in 1X PBS. Single asterisk (*) denotes a statistically significant differences ($p<0.05$) between the indicated pair. Triple asterisks (***) for BrCy111-nEGs fabricated at 750 and $1000\mu \mathrm{M}$ indicate that those mean zeta-potential values were significantly different ($p<0.001$) as compared to the values for other nanoparticles.