Fig. 4From: Characterization and in vitro assessment of three-dimensional extrusion Mg-Sr codoped SiO2-complexed porous microhydroxyapatite whisker scaffolds for biomedical engineeringElemental mapping images of SMSHA. SEM images (a1, a2). All elemental distribution images (b1, b2). Ca, P, O, Si, Mg, Sr distribution images (c1–h1, c2–h2), respectively. Macroporous surfaces (a1–h1) and microporous surfaces (a2–h2), respectivelyBack to article page