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Canalicular staining of the male femoral cortical bone: Anterior (compression) (A,B) and posterior (tension) (E,F) sides of wild-type (A,E) and Sp7 tg (B,F) cortical bone. The boxed regions in (A,B,E,F) are magnified in (C,D,G,H), respectively. The arrows in (D,H) show empty lacunae. Scale bars: 50 μm (A,B,E,F); 10 μm (C,D,G,H).
