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Effects of exogenous galectin-3 (gal-3) on type I collagen expression in osteoblasts. Osteoblasts were treated with 1 or 10 μg/ml of recombinant human gal-3 in the presence or not of vitamin D3. Collagen type I α1 chain expression was analyzed by real time RT-PCR. *P versus control (Ctl; without vitamin D3 or gal-3); **p versus 1 μg gal-3 alone; n = 4.
