Table 1.

Changes of digestion time and powder size for optimizing bone ECM hydrogels.

Size (μm) Digestion time	45–250	250–1000	1000–2000
3 days	45–D3	250–D3	1000–D3
5 days	45–D5	250–D5	1000–D5
7 days	45–D7	250–D7	1000–D7