Fig. 3From: Labeling mesenchymal cells with DMSA-coated gold and iron oxide nanoparticles: assessment of biocompatibility and potential applicationsAnalysis of MSC morphology by Instant Prov staining kit. a Negative control group. b Positive control group, with pyknotic nuclei (blue arrows) and normal nuclei (black arrows). c MSC incubated with Au-DMSA (90 μg/mL) and d with γ-Fe2O3-DMSA (80 μg/mL) for 24 h. Bars 50 micrometers (μm)Back to article page