Bone regeneration analysis in MSX1/2 after 10 WPI.
A, Al & Al staining of MSX1/2 group (a, low magnification; b, high magnification) 10 WPI that shows the endochondral bone was replaced by mineralized bone. B, IHC analysis shows the expression of COLI (a, low magnification; b, high magnification) and OCN (c, low magnification; d, high magnification) in mature bone generated in MSX1/2 group after 10 weeks.