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HMSCs on fibronectin functionalized substrates (2 nm titanium/8 nm gold) following 7 days in culture. Top row: histochemical stain (red = oil red O, purple = alkaline phosphatase) of cells in 1:1 (v/v) adipogenic:osteogenic differentiation media (left) and growth media (right). Bottom row: corresponding fluorescence images of nuclei. Scale bars = 100 µm.
