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Representative stained sections of tibial epiphyses of HYPOX rats receiving sc injections of (A) Vehicle ETD; (B) GH (Nutropin) 30 μg ED; (C) GH (Nutropin) 30 μg ETD; and (D) PEG-T3C 30 μg ETD. Rats were sacrificed on d 10 of treatment and their tibias harvested, fixed, sectioned and stained with toluidine blue. Note that the tibial epiphyses (horizontal, purple-staining bands) are thicker in (B) and (D) than in (A) and (C). Red bar in each section = 325 □M.
