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Microscopic H&E-stained images of HOBs cultured on C-u-HA70 and C-β-TCP70 for 7 days. Arrowheads indicate HOBs (original magnification ×200; scale bar, 50 μm). HOBs were not seeded in the controls. As the organic solvent to get rid of the resin dissolves these cellular cubic composites, the sections were stained with H&E while embedded in resin. The HOBs therefore appeared to be lightly stained.
