Insight into Biological Apatite: Physiochemical Properties and Preparation Approaches
Figure 6
SEM images of porcine bone (supercritical CO2 fluid extraction at 30°C, 35 MPa, 2 h): (a) a porous interconnected bone structure was observed in a low power field; (b) most of the biological apatite crystals were embedded in the residual organic components.
