Figure 2.
Physicochemical characterization of TNPs. a) Dynamic light scattering measurements of hydrodynamic size (diameter, nm) and surface zeta potential (ζ, mV) of PLGA cores, T-cell-membrane-derived vesicles (T vesicles), and TNPs. Error bars represent standard deviations (n = 3). b) Transmission electron microscopy images of TNPs negatively stained with uranyl acetate. Scale bar = 50 nm. Inset: A zoomed-in view of a single TNP. Scale bare = 50 nm. c) Stability of TNPs in 1× PBS or 50% fetal bovine serum, determined by monitoring particle size (diameter, nm), over a span of 72 h. Error bars represent standard deviations (n = 3).