Tracking Cell Viability for Adipose-Derived Mesenchymal Stem Cell-Based Therapy by Quantitative Fluorescence Imaging in the Second Near-Infrared Window

The authors developed an activated near-infrared II fluorescent nanoparticle consisting of lanthanide-based down-conversion nanoparticles and IR786s for cell labeling and real-time tracking of adipose-derived MSC viability in vivo.