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Chemical structures of ZnII probes: Zinpyr sensors 3–5, Zinspy sensors 6–9, QZ sensors 10 and 11, QZ2E (12), QZ2A (13), ZPP1 (14), 14 a, and 14 b; subcellular compartmentalization of ZS4 (9) (mitochondrial) in HeLa cells. Adapted with permission from Ref. 68 Copyright 2006 American Chemical Society.
