Figure 6. 3D images of elemental mapping analysis of the 7ZnHAp samples oxygen ( a ), phosphorus Figure 6. 3D images of elemental mapping analysis of the 7ZnHAp samples oxygen ( a ), phosphorus Figure 6. 3D images of elemental mapping analysis of the 7ZnHAp samples oxygen ( a ), phosphorus Figure 6. 3D images of elemental mapping analysis of the 7ZnHAp samples oxygen ( a ), phosphorus ( b ), calcium ( c ) and zinc ( d ). ZnHAp: zinc-doped hydroxyapatite. ( b ), calcium ( c ) and zinc ( d ). ZnHAp: zinc-doped hydroxyapatite. ( b ), calcium ( c ) and zinc ( d ). ZnHAp: zinc-doped hydroxyapatite. ( b ), calcium ( c ) and zinc ( d ). ZnHAp: zinc-doped hydroxyapatite.