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(A) Schematic illustration of PBEAGA-CPT with rapidly transcytosis ability and deep tumor penetration ability. (B) In vivo real-time permeability of PBEAGA-Cy5-CPT from the blood vessel to HepG2 xenograft tumor in a mouse ear after intravenous injection. Reprinted with the permission from Ref. 70. Copyright © 2020, Elsevier Ltd.
