Polyamine metabolism in rat parotid gland after duct ligation
Parotid ducts were ligated unilaterally in rats for periods from 6 h to 5 months. A slight increase in gland weight was observed during the first 24 h; thereafter, the weight gradually fell, being less than 50% of controls at 5 months. The activity of the putrescine-forming enzyme, ornithine decarboxylase (ODC), increased with peak values by 3 days and 3 weeks. However, the putrescine content had
