Fig. 1From: Thymoquinone loading into hydroxyapatite/alginate scaffolds accelerated the osteogenic differentiation of the mesenchymal stem cellsEvaluation of the purity of the extracted hydroxyapatite (HA); A commercial HA XRD spectrum, B XRD spectrum of extracted HA, XRD spectra showed that most of the mineral content was HA, C SEM images of the HA particles. The particle size of the extracted powder was estimated to be 409.78 ± 89.58 nmBack to article page