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(A) FT-IR spectra for SPIO-PEG-D, Dox, and SPIO-PEG. (B) Quantity of Dox conjugate with SPIO-PEG.
Abbreviations: FT-IR, Fourier transform infrared; SPIO-PEG-D, superparamagnetic iron oxide with polyethylene glycol conjugated with doxorubicin; Dox, doxorubicin; SPIO-PEG, SPIO with PEG; FD, free doxorubicin.
