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Prussian Blue staining of human chondrocytes labeled with (A) Endorem® (Guerbet, Roissy, France), (B) dopamine-hyaluronate-maghemite nanoparticles Run IIIB/3, (C) hyaluronate-maghemite nanoparticles Run II/3, and (D) dopamine-hyaluronate-maghemite nanoparticles Run IIIC/3.
Notes: Cell nuclei are counterstained with nuclear fast red. Scale bar 25 μm.
