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Abstract | Cited by

Near-infrared fluorescent silica–porphyrin hybrid nanotubes (HNTs) were successfully synthesized by π–π stacking, electrostatic interaction and a sol–gel reaction. The HNTs-labeled macrophages were detected in vivo, and the minimum detectable number of cells was 200. Furthermore, the biodistribution of HNTs-labeled macrophages was tracked by fluorescence imaging.

Graphical abstract: Silica–porphyrin hybrid nanotubes for in vivo cell tracking by near-infrared fluorescence imaging

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