Figure 4From: Intrinsically superparamagnetic Fe-hydroxyapatite nanoparticles positively influence osteoblast-like cell behaviourAnalysis of cell morphology. Cells were spread with good morphology and firmly attached to the surface. Black spots are the MNPs that have been internalized by cells. A) FeHA 500 μg/ml at day 3, cells stained with Calcein AM in green and EthD-1 in red. B) FeHA 200 μg/ml at day 7, bright field image. Scale bars: 50 μm.Back to article page