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Scheme of ULS and radiolabeled-SPION suspension synthesis [(A) CLS; (B) FLS].
Abbreviations: h, hours; temp, temperature; SPION, superparamagnetic iron oxide nanoparticles; ULS, unradiolabeled SPION; CLS, [14C]-labeled SPION; FLS, [59Fe]-labeled SPION; PSI, poly(succinimide); DMF, N,N-dimethylformamide; DW, deionized water.
