Bone Repair (IMAGE)
Caption
(Upper left) Chemical bonding and physical structure of C?N?4 sheets. (Lower left) In a liquid state, red light is transmitted at a maximum of 450nm and emitted at a wavelength of 635 nm. (Right) After four weeks of loading C?N?4 sheets into the skull-damaged mice, the skull was regenerated by more than 90 percent.
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