Fig. 3. Morphological evolution of aragonite during incubation (A) in water and (B) in SBF, both at 37 °C. In water, the transformation to calcite takes more than 28 d to complete. In contrast, no calcite can be found in case of incubation in SBF, but calcium phosphate precipitates are present already after one day (marked with a red cross, the respective EDS given in Fig. B2-C in Section B on aragonite provided in the ESI†).
