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Axin2 is expressed in cartilage during development. (A) β-galactosidase staining of whole wild-type or Axin2-null embryos at day E13.5. Arrowhead indicates β-galactosidase activity. Representative photomicrographs (original magnification, × 100) of β-galactosidase stained frozen sections: tibia (B) and ribs (C).
