| 摘要 |
A collagen-based delivery matrix including collagen particles, wherein each of the particles has a diameter between 5 mu m and 850 mu m and, when suspended in an aqueous solution at a pH of about 7.0, has a net charge density between -20 moles/mole collagen and -500 moles/mole collagen, or between +20 moles/mole collagen and +250 moles/mole collagen. Also disclosed are methods of preparing and using such a delivery matrix. |
