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. Author manuscript; available in PMC: 2019 Jul 3.
Published in final edited form as: Adv Drug Deliv Rev. 2018 Jul 3;130:90–112. doi: 10.1016/j.addr.2018.06.023

Fig. 9.

Fig. 9

Different types of targeting molecules that have been used in targeted drug delivery systems. mAb: monoclonal antibody, scFv: single-chain variable fragment, F(ab')2: antigen-binding fragment, sdAb: single domain antibody, DARPin: designed ankyrin repeat protein.