Figure 10. Dynamic light scattering (DLS) particle size distribution curve of hydroxyapatite (HAp) ( a ), Figure 10. Dynamic light scattering (DLS) particle size distribution curve of hydroxyapatite (HAp) 7ZnHAp ( b ) and 20ZnHAp ( c ) nanoparticles. ZnHAp: zinc-doped hydroxyapatite. ( a ), 7ZnHAp ( b ) and 20ZnHAp ( c ) nanoparticles. ZnHAp: zinc-doped hydroxyapatite.