On the left, morphological (5Kx mag) and compositional analysis (at%) of NCL2 bioceramic pellet: a) before immersion in SBF, b) after 7 days and c) after 28 days of immersion in SBF, with the inset showing the precipitate morphology (10Kx). On the right, morphological (5Kx mag) and compositional analysis (at%) of NCL7 bioceramic pellet: d) before immersion in SBF, e) after 7 days and f) after 28 days of immersion in SBF, with the inset showing the precipitate morphology (10Kx).