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. Author manuscript; available in PMC: 2020 Feb 4.
Published in final edited form as: Chem Soc Rev. 2019 Feb 4;48(3):771–813. doi: 10.1039/c8cs00304a

Fig. 7.

Fig. 7

Tripartite prodrug activation pathway and quinone/trimethyl tripartite quinone-based prodrug structures. Hypoxia selective indolequinone = blue, conjugated drug = red, tumour localizing biotin = pink.