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Laser scanning confocal microscopy on the freshly removed tumor (A), liver (B), and skin (C) 24 hours after intracardiac administration of rhodamine-labeled HFt-MSH-PEG (top) and wild-type HFt (bottom) nanoparticles. Melanoma B16F10 developed in mouse C57BL/6 with a 6 mm diameter. Original magnification 20×.
Abbreviations: HFt, human protein ferritin; PEG, polyethylene glycol; MSH, melanocyte-stimulating hormone peptide.
