Fig. 1

Characterization of the M@P-PDR nanospheres. A Schematic illustration of the synthetic process for M@P-PDR nanospheres. B SEM image of M@P-PDR. C1 TEM image of P-PDR; C2 TEM image of M@P-PDR. D SDS-PAGE protein analysis results of cancer cell membrane vesicles, M@P-PDR and P-PDR. E Zeta-potential of PB, PLGA, P-PDR and M@P-PDR nanospheres (n = 3). F DLS results of P-PDR and M@P-PDR nanospheres. G UV–Vis-NIR spectra of PB NPs, M@P-DR and M@P-PDR suspensions