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. 2020 Feb 26;14:823–832. doi: 10.2147/DDDT.S235098

Figure 1.

Figure 1

Synthesis of folate-contained, pH-sensitive ligands. Folate-contained, pH-sensitive ligands were synthesized by conjugating FA-PEG-COOH with GO through a hydrazone bond.

Abbreviations: FA, folate; PEG, polyethylene glycol; GO, glyceride oleate.