Fig. 1

Influence of crosslinking agent on the microstructure of Alg-nHA-Col composite hydrogel. A Micro-CT imaging of cross-linked Alg-nHA-Col hydrogels was used for detecting the morphometrical properties. B Representative FESEM images of cross-sectional surface morphology of the composite scaffolds reveal pore size distribution. Scale bars are 2 mm. C, D According to EDX analysis, the type, amount, and how the distribution of the elements on the surface of scaffolds could be perused. F–H Dot mapping analysis images indicate the distribution of elements within hydrogel lattice