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(a) Chemical structure of 10-hydroxycamptothecin (10HCPT), (b) Chemical structure of a poly(glycerol-succinic acid) (PGLSA)-COONa dendrimer with encapsulated 10HCPT, (c) phthalocyanin, a photosensitizer for non-invasive cancer treatment and (d) zinc phthalocyanin covalently conjugated to a dendrimer structure. Not drawn to scale.
