Improvement in Tracing Quantum Dot-Conjugated Nanospheres for In Vivo Imaging by Eliminating Food Autofluorescence

Figure 1

In vivo fluorescence images of which regular diets were fed. Dark areas indicate fluorescent signals; (a) in the absence of fluorescent materials; (b) in the presence of fluorescence marker (Qdots-conjugated MNSs); (c) conjugation of amine-functionalized quantum dots (QDs) to the surface of MNS. There are intense autofluorescence signals in the abdominal region of the mouse, even regardless of strong fluorescence sources. These images are taken in the identical conditions (excitation filter: 720 nm, emission filter: 790 nm, and exposure time: 10 sec).

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