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Immunofluorescent localization of WISP-1 in rat embryo E18. Differentiating osteoblasts lining the calvaria (A), femur (B), and ribs (C, D). S, skull; P, periosteum; C, cartilage primordium. Original magnifications: ×100 (A); ×200 (B, C); ×400 (D).
