Fig. 1

Reprinted with permission from Ref. [30]. Copyright © 2019, Theranostics
Schematic diagram of binding method between erythrocyte membrane and NPs (A), biotin-avidin bridges (B), EDC/NHS coupling (C), antibody/ligand-receptor conjugation (D), and passive adsorption (hitchhiking) (E) methods for refunctionalization of erythrocyte-based nanomedicine.