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. Author manuscript; available in PMC: 2017 Jan 11.
Published in final edited form as: Biomacromolecules. 2015 Dec 10;17(1):69–75. doi: 10.1021/acs.biomac.5b01176

Figure 1.

Figure 1

Schematic illustrations of (a) sunflower polymer containing folate targeting ligands and doxorubicin (Dox) drug and (b) proposed delivery mechanism: extravasation into tumor tissue by EPR effect, internalization by folate receptor-expressing cancer cells, and intracellular, pH-triggered Dox release.