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Immunohistochemical localization of bone morphogenetic protein-2 in the growth plate. Control: distilled water (10 mL/kg, p.o.) group; rhGH: recombinant human growth hormone (20 μg/kg, s.c.) group; AM 100: A. macrostemon (100 mg/kg, p.o.) group; AM 300: A. macrostemon (300 mg/kg, p.o.) group. RZ: resting zone; PZ: proliferative zone; HZ: hypertrophic zone. Scale bar = 50 μm.
