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. 2016 Mar 17;14:20. doi: 10.1186/s12951-016-0168-y

Fig. 1.

Fig. 1

FTIR spectra for a citric acid-coated magnetic nanoparticles (CA-MNPs), b firefly luciferase (Luc), and c firefly luciferase combined with CA-MNP (Luc + MNPs) confirm the successful surface modification steps