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Fluorescence photomicrograph of a longitudinal section of the proximal tibia. The fluorescent line corresponds to the tetracycline hydrochloride (20 mg/kg) injection. The arrow indicates the length of growth. (A) Control (distilled water) group, (B) recombinant human growth hormone (20 μg/kg, s.c.) group, (C) A. macrostemon 100 mg/kg group, (D) A. macrostemon 300 mg/kg group. Scale bar = 200 μm.
