Fig. 2

Characterization of nanoparticles (NPs). (a) TEM images of UiO-66, UN, CM, MCM@UN, arrowheads indicate cell membranes. (b) Elemental mapping images of MCM@UN. (c) Size of NPs measured by TEM and zeta potential of NPs. (d) UV-vis spectra of 3M-052, CM, UiO-66, NHWD-870, MCM@UN. (e) Insertion of the immunostimulant (3M-052) into the lipid bilayer of cancer cell membranes through the lipid tail of 18 C. (Dil labeled cell membrane, FITC labeled 3M-052). (f) SDS-PAGE protein analysis of UiO-66, CM, CM@UN, MCM@UN. Data are presented as the mean ± SD (n = 3)