tryp·sin·o·gen /trɪpˈsɪnəʤən/
  胰蛋白□原; 胰朊□元
  tryp·sin·o·gen /trɪpˈsɪnəʤən/ 名詞
  胰蛋白黴原
  Tryp·sin·o·gen n.  Physiol. The antecedent of trypsin, a substance which is contained in the cells of the pancreas and gives rise to the trypsin.
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  trypsinogen
       n : inactive precursor of trypsin; a substance secreted by the
           pancreas and converted to active trypsin by enterokinase
           in the small intestine