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Effect of increasing doses of zinc on pancreatic SSAT activity in nontransgenic and transgenic rats (A) and on pancreatic weight (B). Polyamine concentrations in nontransgenic (C) and transgenic (D) rats. The analyses were carried out 24 h after zinc treatment with three animals in each group. Error bars represent SEM. Tg, transgenic; Sg, syngenic; Put, putrescine; Spd, spermidine; Spm, spermine.
