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Images of tartrate-resistant acid phosphatase (TRAP) stained sections of calvarial bone after 4 weeks. The TRAP stain is yellow. (A) Fgf2−/− mice and (B) Fgf2+/+ mice. White arrows in the images indicate the edges of the original bone defect. The images in the second row of both (A) and (B) are higher magnification images of the white boxed areas in the top row. Scale bar = 200 μm. Quantified data in (C) for Fgf2−/− mice and (D) for Fgf2+/+ mice.
