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Figure 5. Apatite formation on the PEEK-HAP/GO1 scaffolds.
1 day (a1,b1 and c1), 5 days (a5,b5 and c5), 9 days (a9,b9 and c9) and 14 days (a14,b14 and c14): Low-magnification (a1,a5,a9 and a14) and high-magnification (b1,b5,b9 and b14) SEM images, and EDS spectra (c1,c5,c9 and c14).