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Surface topography of 3D porous scaffold visualization in different modes. (A–D)—scaffold without HNTs, (A)—height mode, (B)—laser intensity mode, (C)—optical micrograph, (D)—3D height rendering mode; (E–H)—scaffold doped with HNTs, (E)—height mode, (F)—laser intensity mode, (G)—optical micrograph, (H)—3D height rendering mode.
