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SEM images of (Ai) CL-graphene, (Bi) CL-graphene-Ag, (Ci) CL-graphene-IO and (Di) CL-graphene-HA.
Notes: Aii–Dii are magnified images of Ai–Di.
Abbreviations: SEM, scanning electron microscopy; CL, collagen; Ag, silver; IO, iron oxide; HA, hydroxyapatite.
