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. 2020 Oct 22;15:8151–8166. doi: 10.2147/IJN.S272529

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© 2020 van Eerden et al.

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Schematic impression of active targeting drug delivery systems. Surface markers varies between healthy and tumor tissue. An targeting drug delivery system has one specific target which causes a release of the payload if the drug delivery system is bound to the target. When the target is not expressed or not bound the drug delivery system will not release its payload and will be transported to others locations. This figure was created with BioRender.com.