Fig. 2From: Silicate/zinc-substituted strontium apatite coating improves the osteoinductive properties of β-tricalcium phosphate bone graft substituteRepresentative samples of SrZnSiP, SrSiP, and control. Apatite coating analyzed by (a) SEM and (b) EDS. SEM, scanning electron microscopy; EDS, energy dispersive X-ray spectrometerBack to article page