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Procollagen and osteocalcin levels. (a) Serum procollagen type I N-terminal propeptide (PINP) levels in bile duct ligated (BDL) or sham-operated rats. Data are shown as mean ± standard error of the mean (SEM). (b) Serum osteocalcin levels in bile duct ligated (BDL) or sham-operated rats. Data are shown as mean ± SEM.
