Figure 2

Representative gross images of HCCS-PDA, HCCS, and calvaria disk samples (A,D,G) and particulate forms (B,E,H), scale: 2500 μm. Scanning electron microscopy images of each particulate’s cross-sectional view (C,F,I), scale: 10 μm. The disk dimensions are 16.5 mm in diameter and 2 mm in thickness.