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. 2016 Feb 25;11(2):e0150081. doi: 10.1371/journal.pone.0150081

Fig 5. SEM images of apatite formation.

Fig 5

Representative images of SEM micrographs of Ti-Nb-Sn and CP-Ti discs after AO-treatment or AO- plus HW-treatment, followed by 7 days’ incubation in Hank’s solution. A crystalline apatite layer is observed on the surface of Ti-Nb-Sn and CP-Ti discs after AO- plus HW-treatment and incubation in Hank’s solution. (A) AO-treated CP-Ti; (B) AO-treated Ti-Nb-Sn; (C) AO- plus HW-treated CP-Ti; (D) AO- plus HW-treated Ti-Nb-Sn. (A–D) were all incubated in Hank’s solution.