Figure 1From: Manufacture of IRDye800CW-coupled Fe3O4 nanoparticles and their applications in cell labeling and in vivo imagingCharacterization of IRDy800CW-MNPs. (A) TEM image of MNPs. (B) TEM image of IRDy800CW-MNPs. (C) NIRF signal of nanoparticles. (D) Fluorescent spectrum of the nanoparticles. 1: IRDy800CW-MNPs; 2: MNPs. 3-4: The resuspended precipitate and supernatant of the IRDy800CW-MNPs solution after heat treatment and centrifugation. Abs: absorbance. Em: emission.Back to article page