Fig. 2

A Photographs of nHA@SA scaffold; B FESEM images of SA scaffold; C FESEM images of nHA@SA scaffold; D EDS elemental mapping analysis of Ca and P in nHA@SA scaffold; E XRD pattern of nHA and nHA@SA; F Swelling ratio of nHA@SA scaffold at pH 6.5 and 7.4; G Degradation of nHA@SA scaffold at pH 6.5 and 7.4; H Typical compressive stress–strain curves of SA scaffold and nHA@SA scaffold; I Drug release curve of BTZ/nHA@SA scaffold at pH 6.5 and 7.4