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Representative 2.5 μm × 2.5 μm AFM images of the mineralization induced on the collagen-mica substrate after 5 hours of immersion in SBF in the presence of (a) 1 mg/mL heat denatured BSA, (b) 10 μg/mL BSP, (c) 35.5 μg/mL DPP, and (d) 50 μg/mL OPN.
