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. 2020 Jul 25;18:104. doi: 10.1186/s12951-020-00662-x

Fig. 1.

Fig. 1

In vitro characterization of formulations. FT-IR spectra (a), EDX spectrum of EGAC-Ins (b), TEM images (c) (scale bar: 500 nm for AC-Ins and GAC-Ins, 1000 nm for EGAC-Ins), and CD spectra of insulin released from the nanoparticles (d)